Airworthiness Directive · Amendment 39-16059 · Boeing Model 747 Airplanes; and Boeing Model 757-200, -200PF, and -300 Series Airplanes
Boeing Model 747 Airplanes; and Boeing Model 757-200, -200PF, and -300 Series Airplanes
Superseded. A later AD replaced this one: AD 2013-01-02. Comply with the one in force.
This AD applies to Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 747-52-2286, dated September 28, 2007; and Boeing Model 757-200, -200PF, and -300 series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 757-52-0090, dated September 21, 2007.
We are adopting a new airworthiness directive (AD) for certain Boeing Model 747 airplanes and certain Boeing Model 757-200, -200PF, and -300 series airplanes. This AD requires replacing the control switches of the forward, aft, and nose cargo doors of Model 747 airplanes; and requires replacing the control switches of cargo doors 1 and 2 of Model 757 series airplanes. This AD results from reports of problems associated with the uncommanded operation of cargo doors. We are issuing this AD to prevent injuries to persons and damage to the airplane and equipment.
Comply with this AD within the compliance times specified, unless already done.
Within 24 months after the effective date of this AD, replace the control switches as specified in paragraph (f)(1) or (f)(2) of this AD, as applicable. Repeat the replacements thereafter at intervals not to exceed 72 months.
(1) For Model 747 airplanes: Replace the control switches of the forward, aft, and nose cargo doors, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 747-52-2286, dated September 28, 2007.
(2) For Model 757 series airplanes: Replace the control switches of cargo doors 1 and 2, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-52-0090, dated September 21, 2007.
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
