Airworthiness Directive · Amendment 39-14249 · Boeing Model 757-200 and -300 Series Airplanes and Model 767 Series Airplanes
Boeing Model 757-200 and -300 Series Airplanes and Model 767 Series Airplanes
This AD applies to Boeing Model 757-200 and -300 series airplanes and Model 767-200, -300, -300F, and -400ER series airplanes; certificated in any category; equipped with a Pegasus flight management computer (FMC) system.
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 757-200 and -300 series airplanes and Model 767 series airplanes. This AD requires replacing the existing operational software of the Pegasus flight management computer (FMC) system with new, improved operational software. This AD results from reports of "old" or expired air traffic control (ATC) clearance messages being displayed on the control display unit (CDU) of the FMC system during subsequent flights. We are issuing this AD to prevent display of "old" or expired ATC clearance messages on the CDU of subsequent flights, which could result in the airplane entering unauthorized airspace or following a flight path that does not provide minimum separation requirements between aircraft, and a consequent near miss or a mid-air collision.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
For all airplanes operating with an Air Traffic Services data link function enabled: With the exception of the work instruction to replace the existing OPS and FIDO diskettes in the software media binder, which is not required by this AD, within 18 months after the effective date of this AD, replace the OPS and FIDO software of the existing FMC with Pegasus 2003 OPS and FIDO software or Pegasus 2005 OPS and FIDO software, in accordance with the applicable service bulletin specified in either Table 1 or Table 2 of this AD.
| Boeing Airplane Model | Boeing Alert Service Bulletin | Dated |
|---|---|---|
| 757-200 series airplanes | 757-34A0258 | February 12, 2004. |
| 757-300 series airplanes | 757-34A0259 | February 12, 2004. |
| 767-200, -300, and -300F series airplanes | 767-34A0389, Revision 2 | December 16, 2004. |
| 767-400ER series airplanes | 767-34A0390 | February 19, 2004. |
| Boeing Airplane Model | Boeing Service Bulletin | Dated |
|---|---|---|
| 757-200 series airplanes | 757-34-0324 | March 17, 2005. |
| 757-300 series airplanes | 757-34-0325 | March 17, 2005. |
| 767-200, -300, and -300F series airplanes | 767-34-0471 | March 17, 2005. |
| 767-400ER series airplanes | 767-34-0472 | March 17, 2005. |
Accomplishment of Boeing Alert Service Bulletin 767-34A0389, dated February 19, 2004; or Revision 1, dated September 16, 2004, before the effective date of this AD, is an acceptable method of compliance with the requirements of this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
