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71-24-04: 71-24-04 CESSNA: Amdt. 39-1340. Applies to following airplanes: MODELS SERIAL NUMBERS AFFECTED 177 661, 17700001 and 17700003 thru 17701164 206 206-0001 thru 206-0275 U206 U206-0276 thru U206-0437 P206 P206-0002 thru P206-0160 U206A U206-0438 thru U206-0656 P206A P206-0161 thru P206-0306 TU206A U206-0487 thru U206-0656 P206B P206-0307 thru P206-0419 TU206B U206-0657 thru U206-0914 TP206A P206-191 thru P206-0306 TP206B P206-0307 thru P206-0419 U206B U206-0657 thru U206-0914 P206C, TP206C P206-0420 thru P206-0519 U206C, TU206C U206-0915 thru U206-1234 210D 21058221 thru 21058510 210E 21058511 thru 21058715 T210F T210-0001 thru T210-0197 210F 21058716 thru 21058818 T210G T210-0198 thru T210-0307 210G 21058819 thru 21058936 T210H T210-0307 thru T210-0392 210H 21058937 thru 21059062 336 633, 636, 336-001 thru 336-0195 337 337-0002 thru 337-0239 337A 337-0240 thru 337-0525 (except 337-0306 and 337-0470) 337B 337-0001, 337-0470, 337-0526 thru 337-0755 T337B 337-0001, 337-0526 thru 337-0755 (except 337-0569) 337C, T337C 337-0756 thru 337-0978 Compliance: Required as indicated, unless already accomplished. To detect leakage of flammable fluids from flexible hose assemblies in the engine compartment within 100 hours' time in service after the effective date of this AD and thereafter at intervals not to exceed 100 hours' time in service, accomplish the following: A. Visually, or by any other method approved by FAA, inspect fuel lines as follows: 1. Pressurize the fuel lines with boost pump operating in high position. When accomplishing this test, the mixture control should be in the idle cutoff position. 2. With fuel lines pressurized, examine all flexible hose exteriors in the engine compartment for evidence of fuel stains, wetness, or leakage. 3. After pressure testing fuel hoses, allow sufficient time for excess fuel to drain overboard from the engine manifold before attempting an engine start. B. Visually, or by any other method approved by the FAA, inspect oil lines for evidence of wetness or leakage. C. If, as a result of the inspections required by Paragraphs A or B, fuel and/or oil stain, wetness or leaking is found, replace with a serviceable hose assembly. D. Inspections required by Paragraphs A and B will no longer be required when hose assemblies are replaced with assemblies having a Cessna dated metal tag attached. TSO-C53a Type C approved hose assemblies are also acceptable for this replacement. (See Note 1) NOTE 1: This does not preclude continued inspections of this area as required by FAR 91. NOTE: Cessna Service Letter SE71-7, Supplement No. 1 dated November 3, 1971, covers this subject. The above airplanes use Aeroquip 601 series or Stratoflex 156 series hose assemblies available under Cessna P/N S1236-x-xxxx. The hose assemblies are identified by a steel braided exterior. This amendment becomes effective November 23, 1971.
93-08-14: 93-08-14 BELL HELICOPTER TEXTRON, INC. (BHTI): Amendment 39-8562. Docket Number 93-SW-01-AD. Applicability: Model 222, 222B, and 222U helicopters, equipped with main rotor flapping bearings (bearings), part number (P/N) 222-310-114-003, -105, -107 and -109, certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent failure of the bearings, loss of a main rotor blade, and subsequent loss of control of the helicopter, accomplish the following: (a) Within the next 10 hours' time-in-service after the effective date of this AD, and thereafter at intervals not to exceed 10 hours' time-in-service from the last inspection, visually inspect the bearings for cracks in accordance with paragraph 1 of the Accomplishment Instructions of the applicable BHTI Alert Service Bulletin Nos. 222U-92-33 or 222-92-60, both dated December 16, 1992. (b) If a crack is found in the bearings, replace the affected bearings with an airworthy part before further flight. (c) An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Rotorcraft Standards Staff, FAA, Rotorcraft Directorate. Operators shall submit their requests through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Rotorcraft Standards Staff. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Rotorcraft Standards Staff. (d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the helicopter to a location where the requirements of this AD can be accomplished. (e) The inspection and any necessary replacement shall be done in accordance with the applicable BHTI Alert Service Bulletin Nos. 222U-92-33 or 222-92-60, both dated December 16, 1992. This incorporation byreference 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 Bell Helicopter Textron, Inc., P.O. Box 482, Fort Worth, Texas 76101. Copies may be inspected at the FAA, Office of the Assistant Chief Counsel, 2601 Meacham Boulevard, room 663, Fort Worth, Texas; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (f) This amendment becomes effective on April 6, 1994.
90-03-19 R1: 90-03-19 R1 FAIRCHILD AIRCRAFT CORPORATION (formerly Swearingen Aviation Corporation): Amendment 39-6499 as revised by 39-6672. Docket No. 89-CE-24-AD. Applicability: Models SA226-T (Serial Numbers (S/N) T201 through T275, and T277 through T291), SA226-T(B), (S/N T(B)276 and T(B)292 through T(B)417), SA226-AT (S/N AT001 through AT074), SA226-TC (S/N TC201 through TC419), SA227-TT (S/N TT421 through TT541), SA227-AT (S/N AT423 through AT695), SA227-AC (S/N AC406, AC415, AC416, AC420 through AC705, and AC707 through AC733) airplanes certificated in any category. Compliance: Required within the next 100 hours time-in-service after the effective date of this AD, unless already accomplished per AD 90-03-19. To prevent an inadvertent deenergized battery bus relay, which could result in unrecoverable loss of the airplane's electrical power, accomplish the following: (a) Modify the electrical system using the following procedures, or the procedures contained in Fairchild Service Bulletins SA226-24-032 and SA227-24-013, both dated August 7, 1989, as applicable: (1) Remove the access cover of the "J-Box", EP11. (2) Locate Battery Bus Relay K40 and remove diode from across X1 and X2 terminals. (3) Reinstall access cover. (4) Using the Battery Switches, verify that battery voltage is present on the LH Essential, RH Essential, and Nonessential busses. NOTE 1: Fairchild Service Bulletins SA226-24-032 and SA227-24-013 both dated August 7, 1989, pertain to the subject of this AD. (b) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (c) An alternate method or adjustment of the compliance time, which provides an equivalent level of safety, may be approved by the Manager, Airplane Certification Office, Federal Aviation Administration, Fort Worth, Texas 76193-0150. NOTE 2: The request should be forwarded through an FAA Maintenance Inspector, who may add commentsand then send it to the Manager, Airplane Certification Office, Fort Worth, Texas. All persons affected by this directive may obtain copies of the documents referred to herein upon request to the Fairchild Aircraft Corporation, P.O. Box 790490, San Antonio, Texas 78279-0490, or may examine these documents at the FAA, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106. This AD revises AD 90-03-19, Amendment 39-6499. This amendment (39-6672, AD 90-03-19 R1) becomes effective on August 15, 1990.
2016-12-04: We are adopting a new airworthiness directive (AD) for all Airbus Model A318 series airplanes; A319 series airplanes; A320-211, - 212, -214, -231, -232, and -233 airplanes; and A321 series airplanes. This AD was prompted by an evaluation by the design approval holder (DAH) indicating that certain structural repair manual (SRM) inspection requirements for the fuselage skin repairs are insufficient to detect cracks. This AD requires an inspection to determine whether any fuselage external skin (doubler) repairs have been accomplished, an inspection for cracking of certain repaired external fuselage skin areas in the fuselage, and repair if necessary. We are issuing this AD to detect and correct fatigue cracking of the fuselage skin, which could result in reduced structural integrity of the airplane.
2004-06-07: This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-120 series airplanes, that requires a one-time inspection for signs of overheating of wiring splices of the pitot/static 1, 2, and auxiliary sensors; the angle-of- attack sensors; the side slip sensors; and the current sensors. This action also requires follow-on actions. This action is necessary to prevent overheating of cockpit wiring, which could result in loss of operation of the affected systems, or smoke or fire in the cockpit. This action is intended to address the identified unsafe condition.
56-15-01: 56-15-01 BELL: Applies to Model 47H1 Helicopters, Serial Numbers 1347 Through 1356. Compliance required as soon as possible, but not later than August 15, 1956. In order to prevent tail boom skin cracking in the area of the aft ballast, it is necessary to complete a revised aft ballast provision installation utilizing Bell Kit No. 47-2406-1B. In addition it is also necessary to install Bell Kit No. 47-2406-1A, Antitorque Control Pulley Brackets Installation, at this same time to permit the installation of the new tail rotor control cable assembly, P/N NAS 302 R-66-5537. This revised antitorque control system installation is required to provide adequate clearance with the new aft ballast provision installation. (Bell Mandatory Service Bulletin No. 110 dated June 1, 1956 covers this same subject.)
98-12-25: This amendment adopts a new airworthiness directive (AD), applicable to certain British Aerospace BAe Model ATP airplanes, that requires a one-time inspection to detect corrosion, wear, or damage of the operating mechanism of the forward door of the main landing gear (MLG); operational inspections to ensure smooth operation of the MLG operating mechanism; and follow-on actions. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent partial seizure of the forward door of the MLG operating mechanism, which could result in the inability to lower or retract the MLG.
2016-12-10: We are superseding Airworthiness Directive (AD) 2016-09-07 for all Airbus Model A318, A319, A320, and A321 series airplanes. AD 2016- 09-07 required replacing certain pitot probes on the captain, first officer, and standby sides. This new AD retains those requirements, but with a revised compliance time. Since we issued AD 2016-09-07, we received additional reports of airspeed indication discrepancies during flight at high altitudes in inclement weather. We are issuing this AD to prevent airspeed indication discrepancies caused by accumulation of ice crystals during inclement weather, which, depending on the prevailing altitude, could lead to reduced controllability of the airplane.
2001-08-09: This amendment supersedes an existing airworthiness directive (AD), applicable to certain Boeing Model 737-600, -700, -800, and -700C series airplanes, that currently requires initial and repetitive inspections of the elevator tab assembly to detect any damage or discrepancy; and corrective actions, if necessary. This amendment clarifies the applicability and certain requirements of the AD. This amendment is prompted by requests for such clarification. The actions specified in this AD are intended to prevent excessive in-flight vibrations of the elevator tab, which could lead to loss of the elevator tab and reduced controllability of the airplane. \n\n\tThe incorporation by reference of certain publications listed in the regulations was approved previously by the Director of the Federal Register as of March 20, 2001 (66 FR 13229, March 5, 2001).\n\n\tComments for inclusion in the Rules Docket must be received on or before June 19, 2001.
2000-23-04 R1: This amendment revises an existing airworthiness directive (AD), applicable to all Aerospatiale Model ATR42-500 series airplanes. This amendment continues to require revising the Airworthiness Limitations Section of the Instructions for Continued Airworthiness to incorporate life limits for certain items and inspections to detect fatigue cracking in certain structures. This amendment also adds information pertaining to certain material incorporated by reference. This amendment is prompted by issuance of a new revision of the "Time Limits" section of the ATR42-400/500 Maintenance Planning Document, which specifies new inspections and compliance times for inspection and replacement actions. This amendment is intended to ensure that fatigue cracking of certain structural elements is detected and corrected; such fatigue cracking could adversely affect the structural integrity of these airplanes. \n\n\tThe incorporation by reference of certain publications listed in the regulations is approved by the\nDirector of the Federal Register as of May 1, 2001.\n\n\tComments for inclusion in the Rules Docket must be received on or before May 16, 2001.