Airworthiness Directive · Amendment 39-14827 · Boeing Model 757 Airplanes
Boeing Model 757 Airplanes
This AD applies to Model 757-200, -200PF, -200CB, and -300 series airplanes, certificated in any category; as identified in the applicable service bulletin or bulletins in Table 1 of this AD.
| Boeing Alert Service Bulletin | Revision | Date | Model |
|---|---|---|---|
| 757-27A0146 | Original | October 14, 2004 | 757-200, -200PF, and -200CB series airplanes. |
| 757-27A0147 | Original | October 14, 2004 | 757-300 series airplanes. |
| 757-57A0058 | 1 | January 10, 2002 | 757-200, -200PF, and -200CB series airplanes. |
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 757 airplanes. This AD requires installing a control wheel damper assembly at the first officer's drum bracket assembly and aileron quadrant beneath the flight deck floor in section 41; doing a functional test and adjustment of the new installation; and doing related investigative/corrective actions if necessary. For certain airplanes, this AD also requires doing an additional adjustment test of the re-located control wheel position sensor, and an operational test of the flight data recorder and the digital flight data acquisition unit. This AD also requires installing vortex generators (vortilons) on the leading edge of the outboard main flap on certain airplanes. This AD results from several reports that flightcrews experienced unintended roll oscillations during final approach, just before landing. We are issuing this AD to prevent unintended roll oscillations near touchdown, which could result in loss of directional control of the airplane, and consequent airplane damage and/or injury to flightcrew and passengers.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 24 months after the effective date of this AD, do the actions in paragraphs (f)(1) and (f)(2) of this AD, as applicable.
(1) For all airplanes: Install a control wheel damper assembly at the first officer's drum bracket assembly and aileron quadrant beneath the flight deck floor in section 41; and do all applicable functional and operational tests and adjustments of the new installation, and all applicable related investigative/corrective actions before further flight after the installation. Do all actions in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 757-27A0146, dated October 14, 2004 (for Model 757-200, -200PF, and -200CB series airplanes); or Boeing Alert Service Bulletin 757-27A0147, dated October 14, 2004 (for Model 757-300 series airplanes). Where Boeing Alert Service Bulletin 757-27A0146 specifies to contact Boeing if a just-installed (new) wheel damper does not function properly, correct that condition in accordance with the procedures in paragraph (i) of this AD.
(2) For Model 757-200, -200PF, and -200CB series airplanes: Install vortex generators (vortilons) on the leading edge of the outboard main flap in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 757-57A0058, Revision 1, dated January 10, 2002.
Actions done before the effective date of this AD in accordance with Boeing Special Attention Service Bulletin 757-57-0058, dated March 9, 2000, are acceptable for compliance with the actions in paragraph (f)(2) of this AD.
Although the Accomplishment Instructions of Boeing Alert Service Bulletin 757-27A0146 and Boeing Alert Service Bulletin 757-27A0147, both dated October 14, 2004, describe procedures for submitting a sheet recording accomplishment of the service bulletin, this AD does not require that action.
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
