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65-15-05: 65-15-05 PIPER: Amdt. 39-105 Part 39 Federal Register July 8, 1965. Applies to Models PA-25, Serial Numbers 25-1 through 25-731, and PA-25-235, Serial Numbers 25-2000 through 25-3565 Aircraft. Compliance required as indicated. To prevent loss of the elevator control system as a result of worn clevis bolts, accomplish the following: (a) For aircraft with less than 250 hours' time in service on the effective date of this AD, comply with (c) before the accumulation of 260 hours' time in service unless already accomplished, and thereafter at intervals not to exceed 250 hours' time in service from the last inspection until modified in accordance with (d). (b) For aircraft with 250 or more hours' time in service on the effective date of this AD, comply with (c) within the next 10 hours' time in service unless already accomplished within the last 240 hours' time in service, and thereafter at intervals not to exceed 250 hours' time in service from the last inspectionuntil modified in accordance with (d). (c) Remove the clevis bolt, AN-24-14, from the center hole of the elevator cable link assembly, P/N 81352-15, at the lower end of the control column and inspect it for wear. Replace any clevis bolt that is worn where it contacts the link assembly with a new clevis bolt, AN-24-14. (d) Replace link assemblies, P/N 81352-15, and spacer, P/N 61402-5, shown on Piper Drawing No. 64374, Revision B, with link assembly, P/N 64748, and bushing, P/N 64749, in accordance with Piper Service Letter No. 455 or an equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA Southern Region. This directive effective July 18, 1965.
2008-23-13: We are adopting a new airworthiness directive (AD) for certain Hawker Beechcraft Corporation (HBC) Model 390 airplanes. This AD requires you to remove the current preformed packing, elbow fitting, and jam nut from the left and right hydraulic pump pressure output port and replace with new parts. This AD also requires you to install a hydraulic pump case drain check valve. This AD results from nine occurrences of hydraulic fluid leaking from the engine hydraulic pump output fitting as a result of an improperly installed elbow connecting the output port to the pulse dampener hose. We are issuing this AD to prevent hydraulic fluid leaks from the left and right hydraulic fluid pump and to prevent the flow of hydraulic fluid into the engine compartment. The loss of hydraulic fluid can result in loss of airplane hydraulic system pressure and the consequent loss of hydraulic system functions including gear extension/retraction, spoiler functions, and anti-skid braking system actuation. The inability of the hydraulic installation to isolate flow of hydraulic fluid could result in a hazardous amount of flammable fluid in the corresponding engine compartment. These conditions, if not corrected, could result in loss of system functions and/or fire in the engine compartment.
94-08-11: This amendment adopts a new airworthiness directive (AD), applicable to certain Jetstream Model ATP airplanes, that requires replacement of certain circuit breakers on the left- and right-hand AC generator panel assemblies with new circuit breakers. This amendment is prompted by reports of failures due to localized overheating of the electric power circuit for the air conditioning recirculation fan in the environmental control system (ECS). The actions specified by this AD are intended to prevent the recirculation fan circuit from overheating, which could lead to smoke and/or flame in the fuselage.
65-09-02: 65-09-02 DOUGLAS: Amdt. 39-56 Part 39 Federal Register April 21, 1965. Applies to Model DC-6 Series Aircraft. \n\n\tCompliance required as indicated. \n\n\tDue to the failure of a main gear torque link, P/N 8065-46, the wheels and axle of the main gear rotated 180 degrees. To correct this condition, accomplish the following on torque links, Douglas P/N 8065-46, which have not been reworked in accordance with Douglas Service Engineering Letters C1-78-133/DJW dated January 28, 1964, C1-78-977/DJW dated June 22, 1964, or C1-78-1311/DJW dated August 11, 1964, and attached service sketches: \n\n\t(a)\tWithin 600 hours' time in service after the effective date of this AD for torque links which have been installed on aircraft for 20,000 or more hours' time in service on the effective date of this AD, and prior to the accumulation of 20,600 hours' time in service for torque links which have been installed on aircraft for less than 20,000 hours' time in service on the effective date of this AD - \n\n\t\t(1)\tInspect for cracks in the area of the vertical webs adjacent to the trunnion holes, using a 10-power glass or an equivalent method approved by the Aircraft Engineering Division, FAA Western Region. \n\n\t\t(2)\tTorque links with cracks greater than 0.170 inch in depth shall be replaced before further flight with torque links reworked in accordance with Douglas Service Engineering Letters C1-78-133/DJW dated January 28, 1964, C1-78-977/DJW dated June 22, 1964, or C1-78-1311/DJW dated August 11, 1964. \n\n\t\t(3)\tTorque links with cracks 0.170 inch in depth or less shall be: \n\n\t\t(i)\tReworked before further flight in accordance with Douglas Service Engineering Letter C1-78-1311/DJW dated August 11, 1964, and Douglas Service Sketch No. 608-A attached thereto, or an equivalent method approved by the Aircraft Engineering Division, FAA Western Region; or \n\n\t\t(ii)\tReplaced before further flight with torque links reworked in accordance with Douglas Service Engineering Letters C1-78-133/DJW dated January 28, 1964, C1-78-977/DJW dated June 22, 1964, or C1-78-1311/DJW dated August 11, 1964. \n\n\t\t(4)\tIf no cracks are found, repeat the inspection described in subparagraph (1) at intervals not to exceed 600 hours' time in Service from the last inspection. \n\n\t(b)\tThe repetitive inspections required by (a)(4) may be discontinued on torque links reworked in accordance with (a)(3). \n\n\t(c)\tOperators who have not kept records of hours' time in service on individual torque links shall substitute airplane hours' time in service in lieu thereof. \n\n\t(d)\tUpon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Aircraft Engineering Division, FAA Western Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator. \n\n\t(Douglas Service Engineering Letter C1-78-1311/DJW dated August 11, 1964, and Service Sketch No. 608-A attached thereto, cover this same subject.) \n\n\tThis directive effective May 21, 1965.
2008-23-04: We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as affecting only RB211 Trent 500 series turbofan engines that have not incorporated Rolls-Royce plc (RR) Service Bulletin (SB) No. RB.211-72-D733, dated August 21, 2002, or Revision 1 of that SB, dated March 6, 2008, as follows: The intermediate-pressure (IP) turbine blade shrouds of the RB211 Trent 500 series engines feature closure welds (dust caps). Development engine testing has revealed the potential for dust caps to crack, lift and release. The latter may potentially allow hot annulus gas to be ingested down the core passages of IP turbine blades. Radial inflow of annulus gas into the IP disc rim region could cause local heating of the disc firtree, resulting in creep of the disc material. Failure of the disc rim in creep could simultaneously release two blades and a disc post. Failure to this extent could be beyond the containment capabilities of the casing. Consequently, release of the dust caps would constitute a potentially unsafe condition. This AD requires actions that are intended to address the unsafe condition described in the MCAI, which could result in uncontained release of IP turbine blades and disc posts, resulting in damage to the airplane.
66-01-02: 66-01-02 GRUMMAN: Amdt. 39-174 Part 39 Federal Register December 28, 1965. Applies to Model G-164 Series Airplanes Equipped with J-5404/MA96K, SR-5404R/MA96K or SR-5404/MA96K Propellers on Continental W-670 (R-670) Series, Gulf Coast W-670-240, and Jacobs R-755 and L-4M Series Engines. Compliance required within 25 hours' time in service after the effective date of this AD, unless already accomplished. To prevent further instances of loose propeller hubs, accomplish the following: (a) Remove propeller and check for matched sets of cone and spacer. The AN 5008- 20 rear cone (0.969 inch) must be used with the AN 5010-20 spacer (1.00 inch) and a No. 525-B rear cone (0.875 inch) must be mated with a No. 30091 spacer (1.105 inch). The overall average length of these sets must be 1.969 inch and l.980 inch respectively. An exception to these requirements is the Gulf Coast W-670-240 engine modified after 3/10/64 wherein the spacer has been omitted from the propeller installationdue to the 1-inch shorter propeller shaft. (b) Determine that the propeller nut does not bottom on the crankshaft threads by comparing the number of total turns with propeller removed to the number of turns with propeller installed and properly torqued. To correctly seat the propeller hub on the crankshaft there should be at least one full turn less with the propeller installed. If a proper fit cannot be obtained, new matched sets must be installed. If this procedure indicates the need for a spacer on the Gulf Coast W-670-240 installation, install Grumman spacer P/N A1600-99 (1/8 inch long). (Grumman Service Bulletin No. 32 dated September 9, 1965, and Service Bulletin No. 32A dated October 21, 1965, cover this same subject.) This directive effective December 28, 1965.
65-05-02: 65-05-02 DOUGLAS: Amdt. 39-39 Part 39 Federal Register February 25, 1965. Applies to Model DC-8 Series Aircraft Equipped with the Standard Wing Leading Edge Configuration, Except Aircraft with Serial Numbers 45687 to 45690 inclusive. \n\n\tCompliance required as indicated. \n\n\tAs a result of failures of the upper outboard spar cap structure of the inboard pylons, accomplish the following: \n\n\t(a)\tWithin the next 350 hours' time in service unless already accomplished, within the last 650 hours' time in service, inspect in accordance with (b) all inboard pylons having 8,000 or more hours' time in service as of the effective date of this AD. Prior to the accumulation of 8,350 hours' time in service unless already accomplished within the last 1,000 hours' time in service prior to the effective date of this AD, inspect in accordance with (b) all inboard pylons having less than 8,000 hours' time in service as of the effective date of this AD. \n\n\t(b)\tGain access to the area to be inspected by removing outboard access door numbers 213 and 314. Inspect the outboard spar cap, P/N 5640144-1, of No. 2 inboard pylon and the outboard spar cap, P/N 5640144-2, of No. 3 pylon for evidence of cracks in the area of Stations Yip = 225.000 to Yip = 233.000. Use close visual or dye penetrant inspection methods. \n\n\t(c)\tIf cracks are found, rework in accordance with paragraph 2 of Douglas Service Bulletin No. 54-34, Reissue No. 1, dated July 6, 1964, or an equivalent method approved by the Chief, Aircraft Engineering Division, FAA Western Region, before further flight. \n\n\t(d)\tIf no cracks are found, reinspect parts as outlined in (b) at periods not to exceed 1,000 hours' time in service from the last inspection until reworked in accordance with paragraph 2 of Douglas Service Bulletin No. 54-34, Reissue No. 1, dated July 6, 1964, or an equivalent method approved by the Chief, Aircraft Engineering Division, FAA Western Region. The repetitive inspection may be discontinued onall parts reworked in accordance with (c) or (d). \n\n\t(e)\tUpon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Aircraft Engineering Division, FAA Western Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator. \n\n\t(Douglas DC-8 Service Bulletin No. 54-34, Reissue No. 1, dated July 6, 1964, covers this same subject.) \n\n\tThis directive effective March 26, 1965.
2008-22-06: We are adopting a new airworthiness directive (AD) for certain Boeing Model 767-200 and -300 series airplanes. This AD requires replacing the wire segments of the four Fuel Quantity Indicating System (FQIS) wire bundles with new, improved wire segments. This AD results from operator inspections of the FQIS wire bundles that revealed corrosion at the connections between the ground wire and shield of each of the four FQIS wire bundles. We are issuing this AD to prevent this corrosion, which could reduce system protection of the lightning shield and result in loss of the electrical grounding between the lightning shield and the airplane structure. This condition, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.
48-50-04: 48-50-04 CONVAIR: Applies to All Model 240 Aircraft. Compliance required by May 1, 1949. 1. Install steel nose gear upper centering cam, Bendix P/N 157627 in lieu of bronze cam. 2. Install main nose landing gear shock strut bearing and packing nut lock pins, in six places, Bendix P/N 54201 in lieu of lock rings. 3. Rework nose gear steering mechanism. 4. Install nose gear centering guides in nose wheel well. (Consolidated-Vultee Aircraft Corp. Service Bulletin Nos. 240-104A, -161, -162A, -167, and -201; CVAC Service Information Letter No. 310, and Bendix Service Bulletin No. L. G. 504, also cover these same subjects.)
47-20-06: 47-20-06 ERCO: (Was Mandatory Note 14 of AD-718-6.) Applies Only to 415-C, -CD and -D Aircraft Serial Numbers 113-3784, Inclusive, Except the Following Which Have New Design Incorporated: 3719, 3720, 3723, 3724, 3726, 3729, 3732, 3735, 3738, 3741, 3742, 3744, 3745, 3747, 3750, 3753, 3756, 3759, 3762, 3764, 3765, 3767, 3768, 3771, 3774, 3777, 3780, 3783. Compliance required not later than next 100-hour inspection unless visual inspection indicated immediate repair is required. Flexing of the lower aileron skin has resulted in fatigue cracks in the beam in the balance weight area. Inspect the beam and lower aileron skin carefully for cracks and drill relief holes at the ends of all cracks. Then add reinforcement plates (Erco P/N 415-16039-5 and -6) to the front face of the aileron beam and lower surface of the lower aileron skin, respectively, following the procedure outlined in Ercoupe Service Department Bulletin No. 20. (Blind, Type A, AN 450-4-10 may be used in lieu of DupontExplosive DR134A-8 and DR134A-10 rivets, respectively.) Use new longer AN 526C632-7 truss head screws to reinstall the balance weight. Check the aileron rigging and the aileron bellcrank pushrod for freedom from binding in the rod end under full aileron travel before again placing the airplane in operation. (Ercoupe Service Department Bulletin No. 20 dated February 17, 1947, covers this subject in greater detail.)