Airworthiness Directive · Amendment 39-17116 · Thrust reverser
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 767-200 and -300 series airplanes, certificated in any category; as identified in Boeing Alert Service Bulletin 767-78A0089, Revision 5, dated June 9, 2009.
We are superseding an existing airworthiness directive (AD) for certain The Boeing Company Model 767-200 and -300 series airplanes. That AD currently requires replacement of the existing deactivation pin, aft cascade pin bushing, and pin insert on each thrust reverser half with new, improved components. This new AD requires a dye penetrant inspection for cracking of the rivet holes of the bushing plate and repair or replacement, if necessary; and for certain airplanes, replacing the existing bushing with a new bushing and deactivation pin, and installing a new or serviceable stowage bracket for the deactivation pins on all airplanes powered by Pratt & Whitney JT9D series engines. This AD was prompted by reports that certain airplanes require installation of a new bushing and deactivation pin with increased load carrying capability and all airplanes powered by Pratt & Whitney JT9D series engines require installation of a new bracket for stowing the deactivation pin. We are issuing this AD to prevent failure of the thrust reverser deactivation pins, which could fail to prevent a deployment of a deactivated thrust reverser in flight and consequent reduced controllability of the airplane.
(1) This paragraph restates the requirements of paragraph (a) of AD 2002-19-11, Amendment 39-12891 (67 FR 61478, October 1, 2002), with revised service information. Within 24 months after November 5, 2002 (the effective date of AD 2002-19-11, Amendment 39-12891 (67 FR 61478, October 1, 2002)), replace the existing deactivation pin, pin bushing in the aft cascade mounting ring, and pin insert on each thrust reverser half, with new, improved components, in accordance with Boeing Alert Service Bulletin 767-78A0089, Revision 1, dated May 30, 2002; or Boeing Alert Service Bulletin 767-78A0089, Revision 5, dated June 9, 2009. After the effective date of this AD, only Boeing Alert Service Bulletin 767-78A0089, Revision 5, dated June 9, 2009, may be used.
(2) The new, improved insert flange and pin bushing does not physically preclude use of a deactivation pin having P/N 315T1604-2 or -5. However, use of deactivation pins having P/N 315T1604-2 or -5 may not prevent the thrust reversers from deploying in the event of a full powered deployment. Therefore, thrust reversers modified per AD 2002-19-11, Amendment 39-12891 (67 FR 61478, October 1, 2002), are required to be installed with the new, longer deactivation pins having P/N 315T1604-6, as specified in Boeing Alert Service Bulletin 767-78A0089, Revision 1, dated May 30, 2002; or Boeing Alert Service Bulletin 767-78A0089, Revision 5, dated June 9, 2009. After the effective date of this AD, only Boeing Alert Service Bulletin 767-78A0089, Revision 5, dated June 9, 2009, may be used to install the new, longer deactivation pins.
Within 24 months after the effective date of this AD, do the applicable actions specified in paragraphs (h)(1) and (h)(2) of this AD.
(1) For Group 2 airplanes, as identified in Boeing Alert Service Bulletin 767-78A0089, Revision 5, dated June 9, 2009, do a dye penetrant inspection for cracking of the rivet holes and replace any P/N 315T3222-3 or P/N 315T3222-10 bushing and deactivation pin with a new or serviceable P/N 315T3221-1 bushing and new P/N 315T1604-6 deactivation pin, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-78A0089, Revision 5, dated June 9, 2009. If any crack is found in the rivet holes of the bushing plate, before further flight, repair or replace the bushing plate with a new or serviceable bushing plate, as applicable, using a method approved in accordance with the procedures specified in paragraph (j) of this AD.
(2) For both Group 1 and Group 2 airplanes, as identified in Boeing Alert Service Bulletin 767-78A0089, Revision 5, dated June 9, 2009, install a new or serviceable stowage bracket assembly (P/N 015T0196-4 for the right thrust reverser, P/N 015T0196-5 for the left thrust reverser), in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-78A0089, Revision 5, dated June 9, 2009.
