Service difficulty report · Relay · Boeing 747422

Difficulty date
March 13, 2013
Submitted
April 10, 2013
Operation
Air carrier
Aircraft
N178UA
Make and model
Boeing 747422
Aircraft serial
24385
Aircraft time
93,262 hours, 11,206 cycles
Engine
Pwa PW4056
Part
Relay
Part number
E308AH
Part serial
CK46932
Condition
Failed
Location
Stndby
Stage of operation
IN
How discovered
C
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

ACFT FAILED STANDBY POWER CHECK (DL3387). REPLACED STBY POWER TX RELAY R7227 IAW MM 24-29-03,B.A. OPS NORMAL.