Airworthiness directives › 2014-05-19
AD 2014-05-19 Airworthiness Directives; The Boeing Company Airplanes
Models named: 747-200B, 747-200F, 747-300, 747SP series, 747-400, 747-400F series, 767-300 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company airplanes, certificated in any category, identified in paragraphs (c)(1), (c)(2), and (c)(3) of this AD, and equipped with Rolls-Royce RB211-524 engines. (1) Model 747-200B, 747-200F, 747-300, and 747SP series airplanes, as identified in Boeing Service Bulletin 747-78-2178, Revision 1, dated August 4, 2011. (2) Model 747-400 and 747-400F series airplanes, as identified in Boeing Service Bulletin 747-78-2180, Revision 2, dated November 11, 2011. (3) Model 767-300 series airplanes, as identified in Boeing Service Bulletin 767-78-0096, Revision 1, dated December 10, 2009.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 60 months after the effective date of this AD: Do the actions specified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD, as applicable. (1) For Model 747-200B, 747-200F, 747-300, and 747SP series airplanes: Replace relays and relay sockets in the P252 and P253 panels with new relays and relay sockets, and do wiring changes, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 747-78-2178, Revision 1, dated August 4, 2011. (2) For Model 747-400 and 747-400F series airplanes: Install the components removed from the existing P252 and P253 panels, install new relays and relay sockets, and do wiring changes on the new P252 and P253 relay panels, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 747-78-2180, Revision 2, dated November 11, 2011. (3) For Model 767-300 series airplanes: Replace relays and relay sockets in the P36 and P37 panels with new relays and relay sockets, and do wiring changes in the P33, P36, and P37 panels, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-78-0096, Revision 1, dated December 10, 2009.
Unsafe condition
This AD was prompted by multiple reports of uncommanded thrust reverser unlock events, three of which had all three locks disengaged. We are issuing this AD to prevent an uncommanded thrust reverser deployment during takeoff or in flight resulting in decreased airplane control and performance, possible runway excursions, and failure to climb.
Affected ADs
This AD affects the requirements of AD 2000-01-05, Amendment 39-11502 (65 FR 1051, January 7, 2000).
Read the original on the Federal Register →
You just looked this one up by hand
TrackAD holds all 12,278 of them and matches them against the aircraft you actually look after — airframe, engine, propeller and appliances in one pass — then works out what falls due and when.
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- $5 a month, or $50 a year Up to 50 aircraft on either.
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The demonstration shop is eleven real aircraft with a year of work behind them. No account needed.
The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1