65-14-06 UNITED DATA CONTROL, INCORPORATED: Amdt. 39-97 Part 39 Federal Register June 29, 1965. Applies to Model F-542 Series Flight Data Recorders Installed in Aircraft as Required by Applicable Operating Rules.
Compliance required within eight months' after the effective date of this AD, unless already accomplished.
To improve the crash survivability of the flight record, modify all United Data Control, Inc. Model F-542 Series flight data recorders, Serial Number 1399 and prior, in accordance with UDC Service Bulletins 10 dated September 15, 1964, "A" Revision dated January 12, 1965, and 12 dated January 15, 1965, as follows:
(a) Install UDC armor plates 100275 and 100276 and blocks 100277 and 100279 and studs 100278 on the sides of the case.
(b) Replace the front panel assembly with a UDC P/N 100198 armored front panel assembly.
(c) Replace the magazine latch assembly with a UDC P/N 100168 magazine latch assembly.
(d) Remove the nameplate from the old door, and attach it to the new door.
This directive effective July 29, 1965.
Revised July 30, 1965.