Service difficulty report · Regulator · Boeing 737890

Difficulty date
October 9, 2012
Submitted
October 11, 2012
Operation
Air carrier
Aircraft
N531AS
Make and model
Boeing 737890
Aircraft serial
35199
Aircraft time
9,497 hours, 2,997 cycles
Part
Regulator
Part number
1074847
Part serial
11870
Condition
Inoperative
Location
Nr 1 Engine
Part time
9,497 hours, 2,997 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
D

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

What was found

AFTER START UP, DUCT PRESSURE SPLIT OF APPROXIMATELY 12 PSI LT 8- RT 20. ACCOMPLISHED FAULT ISOLATION PROCEDURES TASK 36-10 TASK 804. TROUBLESHOT TO HIGH STAGE REGULATOR. R & R IAW TASK 36-11-07, OPS NORMAL.