Service difficulty report · Bleed Valve · Boeing 737990ER

Difficulty date
July 19, 2023
Submitted
July 24, 2023
Operation
Air carrier
Aircraft
N464AS
Make and model
Boeing 737990ER
Aircraft serial
40714
Aircraft time
34,896 hours, 10,801 cycles
Part
Bleed Valve
Part number
32912142
Part serial
5083
Condition
Failed
Location
Apu
Part time
11,067 hours, 19,851 cycles
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

NO APU DUCT PRESSURE. GROUNDED - YES. (RESOLVED ON W/O: 1962653 TASKCARD: N/R-00002 ) REFER TO TSR714655 FOR CORRECTIVE ACTION. THIS DEFECT HAS BEEN CLEARED WITH BLEED AIR VAVLE R+R. MEL 49-7C CLEARED. C/N 19091464 CLEARED. SEAMCC WILL NOTIFIED. PLACARD REMOVED FROM BLEED SWITCH AND LB. MX PROCEDURES REVERSED. TSR714655: REMOVED AND REPLACED BLEED AIR VALVE ON APU REFER AMM 49-52-11. OPS CK GOOD. NO LEAKS FOUND. NO FAULTS FOUND IN APU BITE. REFER TO LP 60593335 FOR MEL REMOVAL. SEAMCC WILL NOTIFIED. C/W TSR714655.