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2004-21-04: The FAA is adopting a new airworthiness directive (AD) for certain Becker Flugfunkwerk GmbH AR 4201 VHF AM transceivers. This AD requires adding an aircraft flight manual (AFM) limitation to the Limitations Section of the AFM, and cockpit placard due to the intermittent malfunctioning of the transceiver, or removing the affected transceiver from service. This AD results from reports of crewmembers having difficulty communicating with Air Traffic Control and other aircraft due to the AR 4201 VHF AM transceiver's inability to block interference from transmitters operating on frequencies other than those set in the transceiver. We are issuing this AD to prevent difficulty in communicating with Air Traffic Control and other aircraft due to intermittent malfunctioning of the transceiver.
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99-26-01: This amendment adopts a new airworthiness directive (AD), applicable to certain Fokker Model F27 Mark 050 series airplanes. This action requires a one-time inspection to verify the tension values of the aileron control cables of the left- and right-hand wings, and corrective actions, if necessary. This action also requires either replacement of the aileron control cables with new, improved aileron control cables, or replacement of the aileron control cables with new, improved aileron control cables and modification of the pulley bracket on the rear face of the bulkhead at frame station 3100. The FAA is issuing this AD in response to mandatory continuing airworthiness information issued by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent interference between the turnbuckles of the aileron control cables and the lightening holes, which could result in binding of the aileron control cables and consequent reduced controllability of the airplane.
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2013-17-04: We are adopting a new airworthiness directive (AD) for various aircraft equipped with Rotax Aircraft Engines 912 A Series Engine. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as oil leaks in the intake channel in the area of the valve guide on some cylinder heads could increase the oil consumption and result in engine stoppage. We are issuing this AD to require actions to address the unsafe condition on these products.
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2022-21-11: The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Inc. Model 204B, 205A, and 205A-1 helicopters and various restricted category helicopters. This AD was prompted by a report of cracked main rotor blades (MRBs). This AD requires repetitive inspections of each MRB and removing any cracked MRB from service. The FAA is issuing this AD to address the unsafe condition on these products.
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78-19-01: 78-19-01 ROLLS-ROYCE LIMITED (Formerly Rolls-Royce (1971) Limited): Amendment 39-3297. Applies to Model RB-211-22B engines which have high pressure turbine discs, part number and serial number as indicated, installed.
Compliance is required as indicated, unless already accomplished.
To ensure adequate life limit margin for, and to prevent failure of the high pressure turbine discs listed herein, accomplish the following:
(a) Permanently remove from service the following high pressure turbine discs before or upon reaching the flight cycle life limit shown.
Part No.
Serial No.
Revised Life Limit Flight cycles
LK48423
CQDY 107
2900
LK48423
CQDY 140
2900
LK48423
CQDY 130
2900
LK48423
CQDY 133
2900
LK48423
CQDY 134
2900
LK48423
CQDY 233
2900
LK53204
CQDY 334
4350
LK53204
CQDY 345
4350
LK53204
CQDY 389
4350
LK53204
CQDY 417
3500
LK53204
CQDY 419
4350
LK53204
CQDY 426
4350
LK53204
CQDY 427
3500
LK53204
CQDY 436
2500
LK53204
CQDY 449
4350
LK53204
CQDY 540
4350
LK53204
CQDY 578
3000
LK53204
CQDY 579
3000
LK53204
CQDY 581
4350
LK53204
CQDY 583
3500
LK69209 A2
CQDY 592
4350
LK53204
CQDY 624
2900
LK53204
CQDY 625
4350
LK53204
CQDY 627
3500
LK53204
CQDY 630
3600
LK53204
CQDY 631
4350
LK53204
CQDY 655
3500
LK53204
CQDY 702
4350
LK53204
CQDY 703
3500
LK53204
CQDY 712
4350
LK53204
CQDY 730
3500
LK69209
CQDY 740
4350
LK62143
CQDY 757
2250
LK53204
CQDY 770
4350
LK53204
CQDY 771
4350
LK53204
CQDY 805
2400
LK58998
CQDY 958
2250
LK58998
CQDY 964
2250
LK53204
CQDY 965
2250
LK58998
CQDY 976
2250
LK58998
CQDY 989
2250
LK69213
CQDY 996
4360
LK58998
CQDY 998
2250
LK58998
CQDY 1002
1200
LK58998
CQDY 1037
2250
LK58998
CQDY 1076
2250
LK58998
CQDY 1140
2250
NOTE: Rolls-Royce Limited Service Bulletin RB.211-72-4300, Revision 3, dated May 12, 1978, pertains to this same subject.
(b) Permanently remove from service the following high pressure turbine discs before or upon reaching 2900 flight cycles:
Part No.
Serial No.
LK53203
CQDY 241
LK48424
CQDY 242
LK53203
CQDY 257
LK53195
CQDY 309
LK53204
CQDY 428
LK53204
CQDY 657
LK53204
CQDY 678
LK53204
CQDY 697
LK53204
CQDY 773
LK53204
CQDY 951
LK69210
CQDY 1227
LK69210
CQDY 1419
NOTE: Rolls-Royce Limited Service Bulletin RB.211-72-4304, Revision 2, dated June 3, 1977, pertains to this same subject.
(c) In accordance with the provisions of FAR 21.197 and FAR 21.199 the aircraft may be flown to a base where the disc removals required by this AD may be performed.
NOTE: For the purpose of this AD a flight cycle is considered to be an operating sequence consisting of engine starting, takeoff operation, landing and engine shutdown.
This amendment becomes effectiveSeptember 25, 1978.
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2022-18-11: The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 777 airplanes. This AD was prompted by a report of a crack found in a front spar lower chord undergoing an underwing longeron replacement. This AD requires repetitive inspections for cracking of the left and right side ring chords, repair angles, front spar lower chords, and front spar webs (depending on configuration) common to the underwing longeron located at station (STA) 1035; modification of the front spar lower chord for some airplanes; repetitive post-modification inspections; and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
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2004-20-10: The FAA adopts a new airworthiness directive (AD) for all Valentin GmbH & Co. Taifun 17E sailplanes. This AD requires you to do an operational check of the front wing-locking mechanism left and right, inspect stop key movement, inspect wing and fuselage side root ribs, inspect the wing side shear force fittings, and take any corrective actions that may be required. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. We are issuing this AD to detect and correct malfunction of wing-locking mechanism, which could result in failure of the wing-locking mechanism disengagement. This failure could lead to unlocking of wing in flight and consequent loss of control of the sailplane.
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2022-19-04: The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767-2C series airplanes. This AD was prompted by a report that insufficient clearance was found between the right stabilizer trim shut-off control wire (bundle W0589) and an elevator control cable. This AD requires a one-time inspection for insufficient clearance between the elevator control cable and wire bundle W0589 on the airplane's left crown, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
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2013-17-03: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 and -300 series airplanes; Model A340-200 and - 300 series airplanes; and Model A340-541 and -642 airplanes. This final rule was prompted by reports of wing tip brakes (WTBs) losing their braking function in service due to heavy wear on the brake discs. WTBs are designed to stop and hold the mechanical transmission of slats and flaps in certain failure cases. This final rule requires repetitive operational tests of certain WTB pressure-off-brakes (POBs) for performance on the flap and slat systems, and replacement of any affected WTB with a new or serviceable part if the test fails. This final rule also requires eventual replacement of all affected WTBs with a new part, which terminates the repetitive tests. We are issuing this final rule to prevent loss of the WTB braking function, and consequent inability of the flap or slat system to be stopped and held in
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position during operation, which could result in loss of control of the airplane.
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2004-20-14: This amendment supersedes an existing airworthiness directive (AD), applicable to all Airbus Model A300 B4 series airplanes and all Airbus Model A300-600 series airplanes. That AD currently requires a one-time high frequency eddy current inspection to detect cracking of the splice fitting at fuselage frame (FR) 47 between stringers 24 and 25; and corrective actions if necessary. This amendment requires new repetitive inspections of an expanded area and adds airplanes to the applicability in the existing AD. The actions specified by this AD are intended to detect and correct cracking of the splice fitting at fuselage FR 47, which could result in reduced structural integrity of the airplane. This action is intended to address the identified unsafe condition.
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