Airworthiness Directive · Amendment 39-16367 · The Boeing Company Model 757 Airplanes, Model 767 Airplanes, and Model 777-200 and -300 Series Airplanes
The Boeing Company Model 757 Airplanes, Model 767 Airplanes, and Model 777-200 and -300 Series Airplanes
This AD applies to the airplanes identified in Table 1 of this AD, certificated in any category.
| The Boeing Company Model- | As identified in Boeing Special Attention Service Bulletin- |
|---|---|
| 757-200, -200CB, and -200PF series airplanes | 757-30-0019, Revision 2, dated April 19, 2010. |
| 757-300 series airplanes | 757-30-0020, Revision 2, dated March 31, 2010. |
| 767-200, -300, and -300F series airplanes | 767-30-0039, dated December 5, 2007. |
| 767-400ER series airplanes | 767-30-0041, dated December 5, 2007. |
| 777-200 and -300 series airplanes | 777-30-0012, Revision 2, dated December 19, 2007. |
We are adopting a new airworthiness directive (AD) for certain Model 757 airplanes, Model 767 airplanes, and Model 777-200 and -300 series airplanes. This AD requires repetitive inspections for damage of the electrical terminal at the left and right flightdeck window 1, and corrective actions if necessary. This AD also allows for replacing the flightdeck window 1 with a new improved flightdeck window equipped with different electrical connections, which terminates the repetitive inspections for that flightdeck window 1. This AD results from several reports of electrical arcs at the terminal blocks of the electrically heated flightdeck window 1. We are issuing this AD to prevent smoke and fire in the cockpit, which could lead to loss of visibility, and injuries to or incapacitation of the flightcrew.
Comply with this AD within the compliance times specified, unless already done.
Within 500 flight hours after the effective date of this AD, do a detailed inspection for damage (including arcing, loose terminal, or heat damage) of the electrical terminal (J5 terminal) at the left and right flightdeck window 1, and do all applicable corrective actions, by accomplishing all the actions for the J5 terminal specified in Work Packages 1 and 2 of the applicable service bulletin specified in Table 1 of this AD, except as provided by paragraph (h) of this AD. Except as provided by paragraph (h) of this AD, do all applicable corrective actions before further flight. Except as provided by paragraph (g) of this AD, repeat the detailed inspection at the applicable interval specified in paragraph (f)(1) or (f)(2) of this AD. Doing the replacement specified in paragraph (i) of this AD terminates the repetitive inspection requirements of this paragraph for the replaced flightdeck window 1.
(1) For flightdeck windows manufactured by 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 flightdeck windows manufactured by 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.
(g) For airplanes on which replacement with a new window 1 that uses screws and lugs for the electrical connections is done in accordance with Work Package 1 or 2 of the applicable service bulletin specified in Table 1 of this AD: Do the next detailed inspection within 500 flight hours after the corrective action, and repeat the inspection thereafter at the applicable interval specified in paragraph (g)(1) or (g)(2) of this AD. Doing the replacement specified in paragraph (i) of this AD terminates the repetitive inspection requirements of this paragraph for the replaced flightdeck window 1.
(1) For flightdeck windows manufactured by 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 flightdeck windows manufactured by 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.
Do the applicable actions specified in paragraph (f) of this AD except as provided by paragraphs (h)(1) and (h)(2) of this AD.
(1) If, during the inspection required by paragraph (f) of this AD, the screw is cross threaded and the terminal lug is tight, do the applicable corrective action within 150 days or 500 flight hours after the inspection, whichever occurs first.
(2) Where paragraph 1.E. of Boeing Special Attention Service Bulletin 757-30-0020, Revision 2, dated March 31, 2010, and Boeing Special Attention Service Bulletin 757-30-0019, Revision 2, dated April 19, 2010, states in the “Action” column to (for example) “ * * * replace windshield in accordance with Work Package 1, step 3. and Work Package 2, step 3,” the intent of the applicable service bulletin is to state, “ * * * Work Package 1, step 3. or Work Package 2, as applicable * * *.” Operators are to use one or the other (or both) work instruction, as applicable, to replace the window(s) that need replacing.
(i) Replacing a flightdeck window 1 that uses screws and lugs for the electrical connections with a flightdeck window that uses pins and sockets for the electrical connections in accordance with Work Packages 3 or 4 of the applicable service bulletin specified in Table 1 of this AD ends the repetitive inspection requirements of this AD for that window 1.
Actions done before the effective date of this AD in accordance with the applicable service bulletin specified in Table 2 of this AD are acceptable for compliance with the corresponding requirements of this AD.
| Boeing Special Attention Service Bulletin— | Revision— | Dated— |
|---|---|---|
| 757-30-0019 | Original | July 19, 2006. |
| 757-30-0019 | 1 | December 19, 2007. |
| 757-30-0020 | Original | July 19, 2006. |
| 757-30-0020 | 1 | December 19, 2007. |
| 777-30-0012 | Original | April 15, 2004. |
| 777-30-0012 | 1 | June 2, 2006. |
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
