Results
2007-05-08: The FAA is adopting a new airworthiness directive (AD) for all Airbus Model A330 and A340 airplanes. This AD requires revising the Airworthiness Limitations section of the Instructions for Continued Airworthiness by incorporating new and revised certification maintenance requirements (CMRs). This AD results from the manufacturer's determination that additional and revised CMRs are necessary in order to ensure continued operational safety of the affected airplanes. We are issuing this AD to prevent safety- significant latent failures that would, in combination with one or more other specific failures or events, result in a hazardous or catastrophic failure condition.
2019-10-51: The FAA is publishing a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH Helicopters (Airbus) Model MBB- BK 117 C-2 helicopters. Emergency AD 2019-10-51 was sent previously to all known U.S. owners and operators of these helicopters. This AD requires, for certain helicopters, inspecting the fuselage frame and providing certain information to the FAA. This AD also prohibits installing certain components as part of Supplemental Type Certificate (STC) SR00592DE on any helicopter. This AD was prompted by reports of fatigue cracks in the fuselage frame. The FAA is issuing this AD to address the unsafe condition on these products.
2019-17-01: The FAA is superseding Airworthiness Directive (AD) 2017-11-09 for certain Learjet, Inc. (Learjet), Model 60 airplanes. AD 2017-11-09 required a one-time fluorescent dye penetrant inspection of the fuselage skin for corrosion, additional related inspections and corrective actions as necessary, and reporting the inspection results to the FAA. This AD clarifies the compliance time for the inspection and corrects an error in the inspection area of the fuselage skin. This AD was prompted by the identification of an error in the fluorescent dye penetrant inspection of the fuselage skin and an ambiguity in the compliance time for the fluorescent dye penetrant inspection. The FAA is issuing this AD to address the unsafe condition on these products.
95-07-05: This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300-600 series airplanes, that requires repetitive ultrasonic inspections to detect cracks in the bolt holes inboard and outboard of rib 9 on the bottom booms of the front and rear wing spars, and repair, if necessary. This amendment is prompted by the discovery of fatigue cracks that emanated from the bolt holes inboard and outboard of rib 9 in the bottom booms of the front and rear wing spars. The actions specified by this AD are intended to prevent reduced structural integrity of a wing spar as a result of fatigue cracks in the bolt holes.
93-17-09: 93-17-09 MCDONNELL DOUGLAS: Amendment 39-8680. Docket 92-NM-221-AD. Supersedes AD 92-02-08, Amendment 39-8144 which superseded AD 89-22-10, Amendment 39-6330.\n\n\tApplicability: Model DC-10 series airplanes and KC-10A (military) airplanes, certificated in any category.\n\n\tCompliance: Required as indicated, unless accomplished previously. \n\n\tTo ensure the continuing structural integrity of these airplanes, accomplish the following: \n\n\t(a)\tWithin 6 months after March 9, 1992 (the effective date of AD 92-02-08, Amendment 39-8144), incorporate a revision into the FAA-approved maintenance inspection program which provides for inspection(s) of the Principal Structural Elements (PSE's) defined in Section 2 of Volume I of McDonnell Douglas Report No. L26-012, "DC-10 Supplemental Inspection Document (SID)," Revision 1, dated May 1990, in accordance with Section 2 of Volume III-90, dated May 1990, or Section 2 of Volume III-91, dated December 1991, of the SID. The non-destructiveinspection (NDI) techniques set forth in Section 2 and Section 4 of Volume II, Revision 1, dated May 1990, of the SID provide acceptable methods for accomplishing the inspections required by this paragraph. All inspection results (negative or positive) must be reported to McDonnell Douglas, in accordance with the instructions contained in Section 2 of Volume III-90, dated May 1990; or Section 2 of Volume III-91, dated December 1991, of the SID. Information collection requirements contained in this regulation have been approved by the Office of Management and Budget (OMB) under the provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq.) and have been assigned OMB Control Number 2120-0056. \n\n\t(b)\tWithin 6 months after the effective date of this AD, replace the revision of the FAA-approved maintenance inspection program required by paragraph (a) of this AD, with a revision that provides for inspection(s) of the PSE's defined in Section 2 of Volume I of McDonnell Douglas Report No. L26-012, "DC-10 Supplemental Inspection Document (SID)," Revision 3, dated December 1992, in accordance with Section 2 of Volume III-92, dated October 1992, of the SID. The NDI techniques set forth in Section 2 and Section 4 of Volume II, Revision 3, dated December 1992, of the SID provide acceptable methods for accomplishing the inspections required by this paragraph. All inspection results (negative or positive) must be reported to McDonnell Douglas, in accordance with the instructions contained in Section 2 of Volume III-92, dated October 1992, of the SID. Information collection requirements contained in this regulation have been approved by the OMB under the provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq.) and have been assigned OMB Control Number 2120-0056.\n\n\t\t(1)\tFor those Fleet Leader Operator Sampling (FLOS) PSE's which do not have a Normal Maintenance Visual Inspection specified in Section 4 of Volume II, Revision 3, dated December 1992, of the SID, the procedure for general visual inspection is as follows: Perform an inspection of the general PSE area for cleanliness, presence of foreign objects, security of parts, cracks, corrosion, and damage.\n\n\t\t(2)\tFor PSE's 53.10.031E/.032E, 53.10.047E/.048E, and 57.10.029E/.030E: The ENDDATE for these PSE's is October 1993. (For these PSE's disregard the June 1993 ENDDATE specified in Section 2 of Volume III-92, dated October 1992, of the SID.)\n\n\t(c)\tAny cracked structure detected during the inspections required by paragraph (a) or (b) of this AD must be repaired before further flight, in accordance with a method approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate.\n\n\tNOTE 1: Requests for approval of any PSE repair that would affect the FAA-approved maintenance inspection program that is required by this AD should include a damage tolerance assessment for that PSE repair.\n\n\t(d)\tAn alternative method ofcompliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles ACO, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles ACO.\n\n\tNOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles ACO.\n\n\t(e)\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. \n\n\t(f)\tThe incorporation of the revision and reporting requirements shall be done in accordance with McDonnell Douglas Report No. L26-012, "DC-10 Supplemental Inspection Document (SID)," Volumes I, II, and III, Revision 1, dated May 1990; and McDonnell Douglas Report No. L26-012, "DC-10 Supplemental Inspection Document (SID)," Volume I, Revision 3, dated December 1992, Volume II, Revision 3, dated December 1992, and Volume III-92, dated October 1992; which contains the following list of effective pages:\n\n\nVolume Number\nReferenced and Date\n\nPage Number\nRevision Level\nShown on Page\nDate\nShown on Page\n\n\n\n\nI - All Series, \nRevision 3,\nDecember 1992\n\nList of Effective Pages \nA, B, C, D,\nE, and F\n\n3\nDecember 1992\n\n\n\n\nII - All Series,\nRevision 3,\nDecember 1992\nList of Effective Pages \nA, B, C, D, E, F, G, H, I, J,\nK, L, M, N, O, and P\n3\nDecember 1992\n\n\n\n\nIII-92 - All Series,\nOriginal\nOctober 1992\nEntire Document \nOriginal \nOctober 1992\n\n(NOTE: The issue/publish date of Volumes I, II, III is indicated on the Record of Revisions page.) The incorporation by reference of McDonnell Douglas Report No. L26-012, "DC-10 Supplemental Inspection Document (SID)," Volume I, Revision 3, dated December 1992, Volume II, Revision 3, dated December 1992, and Volume III-92, dated October 1992; is approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. The incorporation by reference of McDonnell Douglas Report No. L26-012, "DC-10 Supplemental Inspection Document (SID)," Volumes I, II, and III, Revision 1, dated May 1990, was approved previously by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51 as of March 9, 1992 (57 FR 3931, February 3, 1992). Copies may be obtained from McDonnell Douglas Corporation, P.O. Box 1771, Long Beach, California 90846-1771, Attention: Business Unit Manager, Technical Publications - Technical Administrative Support, C1-L5B. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at FAA, Transport Airplane Directorate, Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California 90806-2425; or at the Office of the Federal Register,800 North Capitol Street, NW., suite 700, Washington, DC.\n\n\t(g)\tThis amendment becomes effective on November 24, 1993.
79-05-09: 79-05-09\tTELEDYNE CONTINENTAL MOTORS: Amendment 39-3426. Applies to: \n\nNEW ENGINES \n\nModel\t\t\tSerial Numbers \n\nO-470R\t\t\t466555, 466556, 466561, 466562, 466566 thru 466574 \n\nO-470S\t\t\t464570 \nO-470U\t\t\t467230 thru 467237, 467250 thru 467261, 467263 thru 467271, 467273 \nthru 467313, 467315 thru 467373, 467375, 467377 thru 467397, 467399 thru 467406, 467408 thru 467417, 467419 thru 467448, 467450, 467451, 467453 thru 467464, 467466 thru 467487, 467489 thru 467520, 467523, 567524, 467526 thru 467531, 467533 thru 467539, 467541, 467544 thru 467547, 467550 thru 467558 \nIO-470F\t\t\t453049, 453050 \n\nIO-470L\t\t\t465350 thru 465352, 465354, 465355, 465357 thru 465359, 465361 thru \n465363, 465370 thru 465378, 465380, 465382, 465385, 465388, 465392, 465393, 465395 thru 465399, 465402, 465406, 465408, 465412, 465414, 465415, 465418 thru 465420, 465431 thru 465433, 465437, 465438, 465440, 465441, 465446, 465449 thru 465459 \nIO-470N\t\t458085, 458087 thru 458125, 458127 \n\nIO-520BA & BB\t\t569432, 569447, 569448, 569451 thru 569456, 569458, 569461, 569463 \nthru 569468, 569485, 569507, 569512, 569527, 569566 thru 569593, 569609, 569612, 569619, 569622, 569629, 569637 thru 569659, 569675, 569691, 569713, 569720, 569721, 569723, 569724, 569725 thru 569731, 569734 \n\nIO-520C & CB\t\t561981, 561990, 561991, 561993, 561998, 571001, 571011, 571015, \n571016, 571018, 571025, 571027, 571031, 571033, 571034, 571037, 571041, 571043 thru 571047, 571052, 571065, 571067, 571070, 571071, 71074 thru 571077, 571082, 571089 thru 571093, 571112, 571114, 571123, 571125, 571127 thru 571129, 571133, 571137, 571139 thru 571143, 571149, 571166 thru 571172, 571178, 571180, 571181, 571184, 571185, 571187, 571223 thru 571228 \n\nIO-520D\t\t566792 thru 566794, 566812 thru 566819, 566821, 566840, 566852, \n566856, 566869, 566873 thru 566877, 566880 thru 566884, 566886 thru 566893, 566895 thru 566899, 566900 thru 566929, 566931, 566933, 566934, 566937, 566939, 566941, 566943 thru 566948, 566952 thru 566958, 566962 thru 566965, 566982 thru 566989, 566991 thru 566999, 572001 thru 572003, 572005 thru 572019, 572022 thru 572024, 572026 thru 572032, 572035 thru 572041, 572043 thru 572055, 572057 thru 572062, 572070, 572077 \n\nIO-520E\t\t\t556389, 556391, 556395, 556396, 556397, 556407 thru 556441 \n\nIO-520F\t\t\t570043 thru 570046, 570066 thru 570266, 570268 thru 570275, \n570277 thru 570281, 570284, 570285, 570290 thru 570292, 570300 thru 570312 \n\nIO-520K\t\t\t557360 thru 557367, 557369, 557371, 557373 thru 557405 \n\nIO-520L\t\t\t567255, 567256, 567264, 567266, 567270 thru 567280, 567282 thru \n567293, 567295, 567296, 567299 thru 567312, 567314 thru 567316, 567318, 567320 thru 567325, 567327 thru 567336, 567338, 567339, 567342 thru 567350, 567352 thru 567355, 567359 thru 567363 \n\nIO-520M & MB\t\t565506 thru 565509, 565511, 565512, 565514 thru 565529, 565532 thru \n565546, 565548 thru 565552, 565554, 565557, 565560 thru 565563, 565565 thru 565587, 565589, 565592, 565593, 565596, 565598 thru 565600, 565602, 565603, 565607 thru 565627, 565629, 565631, 565632, 565634, 565635, 565636 thru 565641, 565649, 565651 thru 565653, 565657, 565658, 565662, 565667, 565668, 565671, 565672, 565678, 565692, 565698 \n\nTSIO-520B & BB\t500639, 500644, 500650, 500651 thru 500654, 500660 thru 500665, \n500667 thru 500672, 500674, 500675, 500679, 500680, 500682 thru 500700, 500703, 500704, 500707 thru 500721, 500723 thru 500726, 500728, 500729, 500733 thru 500738, 500740, 500742, 500744, 500747, 500749, 500751, 500752, 500755, 500758 thru 500760, 500771, 500772, 500775, 500776, 500790, 500792, 500794 \n\nTSIO-520C\t\t501540, 501541, 501543 thru 501545 \n\nTSIO-520D & DB\t505009 \n\nTSIO-520E & EB\t501408 thru 501413, 501421 thru 501427, 501430 thru 501470 \n\nTSIO-520H\t\t506865 thru 506868 \n\nTSIO-520J & JB\t\t503605, 503607 thru 503611 \n\nTSIO-520K & KB\t504314 \n\nTSIO-520L & LB\t\t508546, 508549, 508551 thru 508553, 508557, 508559 thru 508573, \n508576, 508579, 508580, 508583 thru 508601, 508603 thru 508607, 508609, 508611 thru 508614, 508618 thru 508626, 508628 thru 508630, 508633, 508681 thru 508693, 508695 thru 508697, 508706 \n\nTSIO-520M\t\t511379 thru 511408, 511410 thru 511420, 511423 thru 511425, 511426 \nthru 511438, 511440 thru 511448, 511451 thru 511459, 511461 thru 511463, 511465 thru 511474, 511476 thru 511480, 511482 thru 511484, 511486 thru 511491, 511493, 511495 thru 511497, 511499, 511503 thru 511505, 511507 thru 511521, 511523 thru 511532, 511535, 511537 thru 511554, 511589 \n\nTSIO-520N & NB\t514303, 514313, 514315 thru 514318, 514327, 514330 thru 514332, \n514334 thru 514407, 514409 thru 514412, 514414 thru 514418, 514420 thru 514434, 514436 thru 514440, 514442 thru 514464, 514467 thru 514491, 514495 thru 514497, 514499, 514501, 514503 thru 514525, 514529 thru 514531, 514534 thru 514537, 514541 thru 514543, 514547 thru 514550, 514552, 514553, 514555 thru 514558, 514560 thru 514571, 514575 thru 514582, 514584 thru 514591, 514593, 514595, 514597, 514598, 514601 thru 514604, 514606 thru 514609, 514618 thru 514623, 514630 thru 514634, 514640, 514642, 514645, 514650, 514651, 514657, 514658, 514662, 514664, 514665, 514671, 514679, 514681, 514691, 514698, 514701, 514728, 514763, 514766 thru 514768, 514771, 514792 thru 514794, 514797, 514815 \n\nTSIO-520P\t\t513028, 513031, 513048 thru 513081, 513083 thru 513125, 513127 thru \n513129, 513133 thru 513140, 513142, 513143, 513146, 513150 thru 513161, 513164, 513166, 513168 thru 513177, 513181, 513185, 513190, 513191, 513193 thru 513195 \n\nTSIO-520R\t\t512759, 512779, 512790 thru 512811, 512813 thru 512833, 512835 thru \n512842, 512844 thru 512909, 512911 thru 512976, 512978 thru 512986, 512988 thru 512991, 512993 thru 512995, 512997, 512998, 517000 thru 517030, 517032 thru 517035, 517037 thru 517043, 517045 thru 517054, 517056 thru 517065, 517067 thru 517074, 517077, 517078, 517080 thru 517082, 517084 thru 517086, 517088 thru 517102, 517104, 517107, 517108, 517109, 517111 \n\nTSIO-520T\t\t515008, 515009, 515014,515016, 515017, 515022, 515023, 515026, \n515027, 515030 thru 515032, 515039 thru 515044, 515046, 515047, 515051, 515053, 515055, 515056 \n\nTSIO-520U\t\t515501 thru 515506 \n\nTSIO-520VB\t\t516001 thru 516024, 516026 thru 516030, 516033, 516035, 516037, \n516039, 516041, 516043 thru 516045, 516050, 516053, 516057, 516060 thru 516064, 516080 thru 516083, 516091, 516114 thru 516117 \n\nGTSIO-520C\t\t602228 \n\nGTSIO-520H\t\t600993, 600995, 607000, 607002, 607003 \n\t\nGTSIO-520K\t\t605149, 605150, 605152 thru 605154 \n\nGTSIO-520L\t\t604797, 604932, 604937, 604938, 604942 thru 604953, 604955 thru \n604966, 604968 thru 604975, 604978, 604981 thru 604983, 604985, 604986, 604988, 604989, 604991 thru 604994, 604996 thru 604999, 608000 thru 608002, 608004 thru 608011, 608014, 608018, 608020, 608023 thru 608029, 608034, 608040, 608043 thru 608048, 608050 thru 608053, 608064, 608066 \n\nGTSIO-520M\t\t606363, 606366, 606400 thru 606439, 606441, 606443, 606444, 606452 \nthru 606454, 606456, 606459, 606460, 606475 \n\nREBUILT ENGINE \n\nModel\t\t\tSerial Numbers \n\nIO-346A\t\t\t230102R, 230103R \n\n6-285CA\t\t227150R thru 227152R, 227154R thru 227162R, 227173R, 227175R, \n227176R \n\nO-470G\t\t\t70671R thru 70673R \n\nO-470J\t\t\t202093R, 202094R, 202096R thru 202102R \n\nO-470K\t\t\t49345R thru 49350R \n\nO-470L\t\t\t69571R, 69572R, 69575R thru 69584R, 69586R thru 69588R \n\nO-470M\t\t\t54081R thru 54085R, 54088R thru 54100R \n\nO-470R\t\t\t226839R, 226858R, 226863R, 226865R, 226868R thru 226907R, \n226909R thru 226914R, 226916R thru 226944R, 226946R, 226949R thru 226954R, 226956R, 226958R, 226962R \n\nO-470S\t\t\t226259R, 226261R thru 226270R, 226272R thru 226281R \n\nO-470U\t\t\t230351R, 230352R, 230354R \n\nIO-470C\t\t\t227245R thru 227264R \n\nIO-470D\t\t105517R thru 105523R, 105525R thru 105527R, 105529R \n\nIO-470E\t\t\t88716R thru 88719R \n\nIO-470F\t\t\t89762R thru 89766R \n\nIO-470H\t\t87327R \n\nIO-470J\t\t\t89100R thru 89102R \n\nIO-470K\t\t\t92767R thru 92779R \n\nIO-470L\t\t\t230033R, 230035R, 230038R thru 230069R, 230071R thru 230077R, \n230079R thru 230082R, 230084R, 230085R, 230088R, 230089R, 230094R, 230095R \n\nIO-470N\t\t96343R thru 96350R, 96352R, 96358R \n\nIO-470S\t\t\t109282R thru 109287R \n\nIO-470U\t\t118389R thru 118390R \n\nIO-470V\t\t\t170628R thru 170652R, 170654R THRU 170665R, 170670R, 170671R \n\nIO-520A\t\t\t112401R thru 112427R, 112429R thru 112431R \n\nIO-520BA\t\t122813R, 122819R, 122836R thru 122841R, 122843R thru 122858R, \n122860R thru 122872R, 122926R, 122931R thru 122934R, 122937R thru 122942R, 122944R thru 122953R, 122956R thru 122958R, 122960R, 122962R, 122964R thru 122966R, 122969R, 122973R thru 122975R, 122978R \n\nIO-520C\t\t\t17325OR, 173259R, 173277R, 173282R, 173284R thru 173289R, \n173294R, 173297R thru 173354R, 173356R thru 173376R, 173379R thru 173396R, 173398R, 173399R, 231553R thru 231601R, 231604R, 231606R, 231609R, 231610R, 231612R, 231615R, 231620R \n\nIO-520D\t\t179564R, 179571R, 179577R thru 179583R, 179585R thru 179613R, \n179615R thru 179628R, 179630R thru 179644R, 179646R, 179647R,179651R, 179654R thru 179658R, 179660R, 179664R \n\nIO-520E\t\t\t215537R \n\nIO-520F\t\t\t195764R, 195767R, 195768R, 195771R, 195774R, 195779R thru \n195797R, 195799R, 195801R, 195802R, 195804R thru 195810R, 195812R thru 195814R, 195818R thru 195829R \n\nIO-520K\t\t\t224010R, 224011R, 224013R \n\nIO-520L\t\t\t220560R thru 220580R \n\nIO-520M\t\t227369R thru 227396R, 227398R thru 227404R \n\nTSIO-520B\t\t176277R, 176281R thru 176283R, 176285R thru 176301R, 176303R \n\nTSIO-520C\t\t178168R thru 178175R, 178178R \n\nTSIO-520E\t\t182930R, 182932R, 182934R thru 182942R, 182944R thru 182998R, \n183000R thru 183017R, 183020R thru 183024R, 183026R thru 183051R, 183054R, 183056R, 183057R \n\nTSIO-520G\t\t216008R \n\nTSIO-520H\t\t217055R thru 217067R \n\nTSIO-520J\t\t218738R thru 218759R, 218761R, 218762R, 218768R thru 218770R \n\nTSIO-520K\t\t224545R \n\nTSIO-520L\t\t227621R, 227622R, 227624R thru 227626R, 227629R \n\nTSIO-520M\t\t230128R, 230129R \n\nTSIO-520N\t\t228091R thru 228114R, 228117R thru 228120R, 228122R \n\nTSIO-520R\t\t230228R, 230230R thru 230233R \n\nGTSIO-520C\t\t155451R thru 155473R, 155479R \n\nGTSIO-520D\t\t219302R thru 219312R, 219314R, 219315R, 219318R \n\nGTSIO-520H\t\t218429R, 218431R thru 218448R, 182450R thru 218465R, 218467R thru \n218493R, 218500R, 231351R thru 231386R, 231388R, 231389R, 231397R \n\nGTSIO-520K\t\t226041R thru 226052R \n\nGTSIO-520L\t\t227825R thru 227829R, 227831R thru 227833R, 227858R, 227860R thru \n227862R \n\nGTSIO-520M\t\t227914R, 227915R, 227917R thru 227922R, 227924R thru 227929R, \n227931R thru 227937R, 227939R, 227940R \n\n\tIn addition, all Teledyne Continental Motors engines of the above listed models, regardless of serial number, which have had the oil pump assembly or oil pressure relief valve screw and/or plunger changed in service during the period April 1, 1978 through January 5, 1979, must comply with this AD. \n\tCompliance is required within the next 50 hours' time in service after the effective date of this AD, unless already accomplished. \n\tTo prevent the possible loss of oil pressure indication, accomplish the following: \n\t(1)\tInspect the oil pressure relief valve housing. If a yellow paint dot is evident, no further action is required. If the paint dot is not evident, remove the relief valve assembly, inspect the screw and plunger and compare their dimensions to the illustrations in paragraph (3). \n\t(2)\tThose screws and plungers which conform dimensionally to Figure 2, "Intermediate Design," must be replaced with components conforming to Figure 3, "Current Design." The "Current Design" is contained in TCM Kit 642335KA1. Screws and plungers conforming to Figure 1, "Original Design," may be continued in service. \n\t(3) \n\n\n\t(4)\tIdentify the oil pressure relief valve housing with a yellow dot on those valves with plungers installed in accordance with Figures 1 and 3. \n\t(5)\tAn alternate method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. \n\t\tNOTE:Teledyne Continental Motors (TCM) Service Bulletin M79-2, Rev. 1, dated February 12, 1979, also pertains to this subject. \n\tThis amendment becomes effective March 12, 1979.
T85-21-51: T85-21-51 BOEING: Telegram issued October 25, 1985. Applicable to Boeing 767 series airplanes certificated in any category. \n\n\tTo prevent loss of certain critical airframe self-locking nuts accomplish the following unless previously accomplished: \n\n\tA.\tWithin 35 landings or 10 days after the effective date of this AD whichever occurs first inspect the horizontal elevator self-locking nuts in accordance with Boeing Alert Service Bulletin 767-27A0064 dated 10/25/85 or later FAA-approved revision. Self-locking nuts found to be insecure in accordance with the criteria specified in the service bulletin must be replaced before further flight with serviceable self-locking nuts. \n\n\tB.\tWithin 50 landings or 20 days after the effective date of this AD whichever occurs first, inspect the inboard aft trailing edge flap self-locking nuts and the outboard wing spoiler actuator self-locking nuts in accordance with Boeing Alert Service Bulletin 767-27A0064 dated 10/25/85 or later FAA-approved revision. Self-locking nuts found to be insecure in accordance with the criteria specified in the service bulletin must be replaced before further flight with serviceable self-locking nuts. \n\n\tC.\tAlternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region. \n\n\tThe Boeing service bulletin specified in this directive may be obtained upon request to the Boeing Company, P.O. Box 3707, Seattle, Washington 98124. \n\n\tThis airworthiness directive becomes effective upon receipt.
64-06-07: 64-06-07 VERTOL: Amdt. 697 Part 507 Federal Register March 7, 1964. Applies to All Model 107-II Helicopters. Compliance required within 25 hours' time in service after the effective date of this AD. To prevent recurrence of a serious lurching condition which has been encountered on this model helicopter, modify each stability augmentation system to derive a.c. power from its respective generator instead of the essential bus, as follows: Remove the present a.c. electrical circuit wiring from terminals A3 and B3 of the a.c. instrument relay and from the "B" phase of the a.c. bus. Connect terminals A3 and B3 of the instrument relay to the terminal T2 of the a.c. feeder relay No. 1 and a.c. feeder relay No. 2 respectively. (Vertol 107-II Service Bulletin No. 107-118 dated December 6, 1963, covers the same subject.) This directive effective March 7, 1964.
2019-16-11: The FAA is superseding Airworthiness Directive (AD) 2018-20- 06, which applied to certain Airbus SAS Model A300 F4-600R series airplanes. AD 2018-20-06 required repetitive high frequency eddy current (HFEC) inspections of the aft lower deck cargo door (LDCD) frame forks; a one-time check of the LDCD clearances; a one-time detailed visual inspection of hooks, eccentric bushes, and x-stops; and corrective actions if necessary. This AD retains the actions of AD 2018-20-06 and requires new compliance times, depending on frame fork configuration. This AD was prompted by a report of two adjacent frame forks that were found cracked on the aft LDCD of two airplanes during scheduled maintenance, and a determination that certain compliance times need to be revised. The FAA is issuing this AD to address the unsafe condition on these products.
91-21-11: 91-21-11 MCDONNELL DOUGLAS: Amendment 39-8058. Docket No. 91-NM-202-AD.\n\n\tApplicability: Model DC-9-81, -82, -83, and -87 series airplanes (MD-81, -82, -83, and -87); and Model MD-88 airplanes; certificated in any category.\n\n\tCompliance: Required as indicated, unless previously accomplished within the last 45 days.\n\n\tTo prevent inadvertent retraction of the slats during flight, accomplish the following:\n\n\t(a)\tPrior to the accumulation of 10,000 total landings or within 30 days after the effective date of this AD, whichever occurs later, perform a visual or eddy current inspection to detect cracks of the slat drive mechanism brackets, part numbers 5938886-(any configuration) and 5938887-(any configuration), in accordance with the instructions in McDonnell Douglas MD-80 Alert Service Bulletin A27-322, dated August 22, 1991 (hereinafter referred to as "A27-322").\n\n\t(b)\tIf no crack is found as a result of the inspections required by paragraph (a) of this AD, repeat the inspections at the following intervals:\n\n\t\t(1)\tIf the immediately preceding inspection was accomplished using visual means, conduct the next inspection within 1,000 landings.\n\n\t\t(2)\tIf the immediately preceding inspection was accomplished using eddy current means, conduct the next inspection within 3,000 landings.\n\n\t(c)\tIf a crack is found as a result of the inspections required by paragraph (a) or (b) this AD, prior to further flight, remove and replace the slat drive mechanism with a new part, part numbers 5938887-(any configuration) and 5938886-(any configuration), in accordance with A27-322.\n\n\t(d)\tAfter replacement is accomplished in accordance with the provisions of paragraph (c) of this AD, prior to the accumulation of 10,000 additional landings, conduct inspections in accordance with A27-322, and reinspect or replace in accordance with the provisions of paragraph (b) and (c) of this AD.\n\n\t(e)\tSpecial flight permits may be issued in accordance with FAR 21.197 and 21.199 tooperate airplanes to a base in order to comply with the inspection requirements of this AD.\n\n\t(f)\tAn alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. \n\n\tNOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may concur or comment and then send it to the Manager, Los Angeles ACO.\n\n\t(g)\tThe inspection and replacement requirements shall be done in accordance with McDonnell Douglas MD-80 Alert Service Bulletin A27-322, dated August 22, 1991. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from McDonnell Douglas Corporation, Technical Publications-Technical Administrative Support, C1-L5B, 3855 Lakewood Boulevard, Long Beach, California 90846. Copies may be inspected at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington; or at the Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California; or at the Office of the Federal Register, 1100 L Street N.W., Room 8401, Washington, D.C.\n\n\tThis amendment (39-8058, AD 91-21-11) becomes effective on October 30, 1991.