Airworthiness Directive · Amendment 39-17284 · Ice and rain protection
The Boeing Company Airplanes
This AD applies to The Boeing Company airplanes, certificated in any category, as identified in paragraphs (c)(1) and (c)(2) of this AD.
(1) Model 757-200, -200PF, and -200CB series airplanes identified in Boeing Special Attention Service Bulletin 757-30-0019, Revision 3, dated December 16, 2011.
(2) Model 757-300 airplanes identified in Boeing Special Attention Service Bulletin 757-30-0020, Revision 3, dated December 16, 2011.
(3) Installation of Supplemental Type Certificate (STC) ST01920SE (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/082838ee177dbf62862576a4005cdfc0/$FILE/ST01920SE.pdf) does not affect the ability to accomplish the actions required by this AD. Therefore, for airplanes on which STC ST01920SE is installed, a “change in product” alternative method of compliance (AMOC) approval request is not necessary to comply with the requirements of 14 CFR 39.17. For all other AMOC requests, the operator must request approval for an AMOC in accordance with the procedures specified in paragraph (n) of this AD.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 757 airplanes. This AD was prompted by a report of in-flight fracture of the right windshield (window 1) on the flight deck and multiple reports of electrical arcs at the terminal blocks of the flight deck windshields resulting in smoke and fire. This AD requires repetitive inspections of electrical heat terminals on the left and right windshields for damage, and corrective actions if necessary. This AD allows replacing an affected windshield with a windshield equipped with different electrical connections, which would terminate the repetitive inspections for that windshield. We are issuing this AD to prevent smoke and fire in the flight deck, which can lead to loss of visibility, and injuries to or incapacitation of the flightcrew.
Within 500 flight hours after the effective date of this AD, except as required by paragraph (h) of this AD: Do a detailed inspection for damage of the wiring and electrical terminal blocks (J1, J4, and J5 terminals) at the left and right flight deck window 1 windshield, and do all applicable corrective actions, by accomplishing all the applicable actions specified in the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-30-0019, Revision 3, dated December 16, 2011 (for Model 757-200, -200PF, and -200CB series airplanes); or Boeing Special Attention Service Bulletin 757-30-0020, Revision 3, dated December 16, 2011 (for Model 757-300 series airplanes). Except as provided by paragraph (j) of this AD, do all applicable corrective actions before further flight. Repeat the detailed inspection thereafter at the applicable interval specified in paragraph (g)(1) or (g)(2) of this AD. Doing the replacement specified in paragraph (k) of this AD terminates the repetitive inspection requirements of this paragraph for that replaced flight deck windshield.
(1) For flight deck windshields manufactured by GKN Aerospace (GKN) with screw/lug electrical connections, repeat the detailed inspection thereafter at intervals not to exceed 12,000 flight hours or 48 months, whichever occurs later.
(2) For flight deck windshields manufactured by PPG Aerospace (PPG) with screw/lug electrical connections, repeat the detailed inspection thereafter at intervals not to exceed 6,000 flight hours or 24 months, whichever occurs later.
For airplanes on which inspections of the J1, J4, and J5 terminals specified in the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-30-0019, Revision 2, dated April 19, 2010 (for Model 757-200, -200PF, and -200CB series airplanes); or Boeing Special Attention Service Bulletin 757-30-0020, Revision 2, dated March 31, 2010 (for Model 757-300 series airplanes); were accomplished before the effective date of this AD: Do the actions required by paragraph (g) of this AD at the applicable compliance time specified in paragraphs (h)(1) and (h)(2) of this AD. Repeat the inspection thereafter at the applicable intervals specified in paragraph (g)(1) or (g)(2) of this AD.
(1) For flight deck windshields manufactured by GKN with screw/lug electrical connections: At the later of the times specified in paragraphs (h)(1)(i) and (h)(1)(ii) of this AD.
(i) Within 12,000 flight hours or 48 months, whichever occurs later, after accomplishing the inspection.
(ii) Within 500 flight hours after the effective date of this AD.
(2) For flight deck windshields manufactured by PPG with screw/lug electrical connections: At the later of the times specified in paragraphs (h)(2)(i) and (h)(2)(ii) of this AD.
(i) Within 6,000 flight hours or 24 months, whichever occurs later, after accomplishing the inspection.
(ii) Within 500 flight hours after the effective date of this AD.
(1) For airplanes on which any windshield is replaced after the effective date of this AD with a windshield that uses screws and lugs for electrical heat connection, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-30-0019, Revision 3, dated December 16, 2011 (for Model 757-200, -200PF, and -200CB series airplanes); or Boeing Special Attention Service Bulletin 757-30-0020, Revision 3, dated December 16, 2011 (for Model 757-300 series airplanes): Do the actions required by paragraph (g) of this AD within 500 flight hours after the windshield replacement; and thereafter at the applicable interval specified in paragraph (g)(1) or (g)(2) of this AD.
(2) For airplanes on which any windshield heat power connection is re-assembled after the effective date of this AD on windshields that use screws and lugs for windshield heat connections, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-30-0019, Revision 3, dated December 16, 2011 (for Model 757-200, -200PF, and -200CB series airplanes); or Boeing Special Attention Service Bulletin 757-30-0020, Revision 3, dated December 16, 2011 (for Model 757-300 series airplanes): Do the actions required by paragraph (g) of this AD within 500 flight hours after the connection re-assembly; and thereafter at the applicable interval specified in paragraph (g)(1) or (g)(2) of this AD.
If, during the inspection required by paragraph (g) or (i) of this AD, the screw is found cross threaded: Do the applicable actions specified in paragraph (j)(1) or (j)(2) of this AD.
(1) If the terminal lug is loose and cannot be tightened: Before further flight, replace that windshield, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-30-0019, Revision 3, dated December 16, 2011 (for Model 757-200, -200PF, and -200CB series airplanes); or Boeing Special Attention Service Bulletin 757-30-0020, Revision 3, dated December 16, 2011 (for Model 757-300 series airplanes).
(2) If the terminal lug is tight or can be tightened: Replace that windshield within 500 flight hours after the inspection, in accordance with the Accomplishment Instructions Boeing Special Attention Service Bulletin 757-30-0019, Revision 3, dated December 16, 2011 (for Model 757-200, -200PF, and -200CB series airplanes); or Boeing Special Attention Service Bulletin 757-30-0020, Revision 3, dated December 16, 2011 (for Model 757-300 series airplanes).
Replacing a flight deck windshield that uses screws and lugs for the electrical connections with a flight deck windshield that uses pins and sockets for the electrical connections, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-30-0019, Revision 3, dated December 16, 2011 (for Model 757-200, -200PF, and -200CB series airplanes); or Boeing Special Attention Service Bulletin 757-30-0020, Revision 3, dated December 16, 2011 (for Model 757-300 series airplanes); ends the repetitive inspection requirements of paragraph (g) of this AD for that windshield.
Accomplishing the actions required by this AD terminates the requirements of paragraphs (g), (j), and (k) of AD 2010-15-01, Amendment 39-16367 (75 FR 39804, July 13, 2010), for that airplane only.
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
