67-17-02 BRITISH AIRCRAFT: Amdt. 39-421 Part 39 Federal Register May 18, 1967. Applies to Model BAC 1-11 Series Airplanes.
Compliance required within the next 1,000 hours' time in service after the effective date of this AD, unless already accomplished.
To prevent a potential fire hazard in the forward and aft freight compartments, modify the light assemblies, as shown in the table (below), by providing ventilating holes in the light cup assemblies and by replacing the nylon lamp cover with a 5/32 inch toughened glass lamp cover, or FAA-approved equivalent, in accordance with British Aircraft Corporation BAC 1-11 Service Bulletin No. 33-PM 1706, or later ARB-approved issue.
Sta. No.
Mod.App.
Pre-Mod.BAC P/N
Post Mod.BAC P/N 200
Ser.Post Mod.P/N 400
256
200&400
AB 28A 15593
AC 28A 5099
AK 28A 26277
296
200&400
AB 28A 15591
AC 28A 5097
AC 28A 5097
336
200&400
AB 28A 15593
AC 28A 5099
AK 28A 26277
376
200&400
AB 28A 15591
AC 28A 5097
AC 28A 5097
396
200&400
AB 28A 15593
AC 28A 5099
AC 28A 5099
670
200&400
AB 27A 17335
AC 27A 5487
AC 27A 5487
710
200&400
AB 28A 15591
AC 28A 5097
AC 28A 5097
750
200 Ser.
AB 27A 17336
AC 27A 14439
750
400 Ser.
AB 27A 17335
AC 28A 14439
This directive effective June 17, 1967.