SDR 97ZZZX1986

Service difficulty report · Pneu Drive Unit · Boeing 747*

Difficulty date
February 21, 1997
Submitted
March 26, 2000
Operation
General aviation
Make and model
Boeing 747*
Part
Pneu Drive Unit
Part number
126344171
Condition
Fail Test
Location
Diaphragm Assy
Component
Alidsignal
Stage of operation
IN
Nature of condition
L
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

UNIT FAILED FUNCTIONAL TEST. FOUND DIAPHRAGM ASSY 886083-5 MISSING SPACER/SLEEVE P/N 113842-146. SPRING RETAINER P/N 3166820-1 MISSING. WRONG SPRING IN VALVE, SPRING P/N 3160871-1 IS NOT USED WITH VALVE 3290402-1. SB 27-1014 NOT C/W. SB 27-1042 PARTIALLY C/W.