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SDR CALA2013041600223

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Service difficulty report · Shutoff Valve · Boeing 767424ER

FAA SDR system

Difficulty date
April 16, 2013
Submitted
April 17, 2013
Operation
Air carrier
Aircraft
N78060
Make and model
Boeing 767424ER
Aircraft serial
29455
Aircraft time
51,427 hours, 7,242 cycles
System (JASC)
3610 · Pneumatic Distribution System
Part
Shutoff Valve
Part number
8253032
Part serial
9902042
Condition
Inoperative
Location
Lt Bleed Sys
Part time
45,639 hours, 6,681 cycles
Stage of operation
IN
How discovered
V
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

DURING ENGINE RUN FOUND LT BLEED AT 55 PSI AND RT AT 45 PSI AT TAKEOFF POWER SETTING WITH BLEEDS ON PACKS OFF, WITH PACKS ON LT BLEED OSSICILATES FROM 40-60 PSI LT SIDE. R & R NR 1 ENG PRSOV, REF MM 36-11-09. OPS CK GOOD. ROTABLE PARTS CHANGE WAS INDICATED - TT 1597264, SN OFF 02042 VALVE, SHUTOFF, OFF 64-3611-9-0008 2042 ON 64-3611-9-0008 9013.