Service difficulty report · Shutoff Valve · Boeing 767306

Difficulty date
October 17, 2018
Submitted
October 18, 2018
Operation
Air carrier
Aircraft
N647GT
Make and model
Boeing 767306
Aircraft serial
27611
Aircraft time
79,814 hours, 20,457 cycles
Part
Shutoff Valve
Part number
7998013
Part serial
900527
Condition
Faulty
Location
Bleed Air Sys
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

LEFT DUCT PRESSURE CYCLING BETWEEN 40-10 PSI BELOW 10000 FEET ON CLIMB AND DESCENT. REMOVED AND REPLACED LEFT PRSOV IAW AMM 36-11-00. OPS CK NORMAL.