Service difficulty report · Valve · Boeing 737890

Difficulty date
March 25, 2023
Submitted
March 27, 2023
Operation
Air carrier
Aircraft
N508AS
Make and model
Boeing 737890
Aircraft serial
35691
Aircraft time
52,914 hours, 15,568 cycles
Part
Valve
Part number
32145526
Part serial
7749
Condition
Leaking
Location
#2 Engine
Part time
64,410 hours, 25,502 cycles
Stage of operation
IN
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

FOLLOW-UP TO REPORT OF #2 (RH) BLEED TRIP ISSUE DURING NO-BLEEDS TAKEOFFS, ACCOMPLISH RIGHT ENG PNEUMATIC SYSTEM HEALTH CHECK PER TASK CARD NG-36WC-00002-2 GROUNDED - YES. PERFORMED #2 ENGINE BLEED AIR SYSTEM HEALTH CHECK UP TO AND INCLUDING STEP 04.P ON PAGE 19. UPON HEALTH CK TEST FOUND HIGH STAGE REGULATOR FAILING, REMOVED AND REPLACED HSR PER B737-AMM 36-11-07 AND FOUND PRSOV LEAKING FROM DIAPHRAM REMOVED AND REPLACED PRSOV PER AMM 36-11-04 SIG 15066 03-26-2023 COMPLETED #2 ENG BLEED AIR SYS HEALTH CK PER T/C NG-36WC-00002-2. ENG BLEED AIR CROSSOVER OPERATIONAL TEST CK GOOD. THIS CLEARS TSR714065, NOTIFIED SEAMC MARKUS.