Service difficulty report · Control Valve · Boeing 737823

Difficulty date
November 24, 2018
Submitted
November 29, 2018
Operation
Air carrier
Aircraft
N952AA
Make and model
Boeing 737823
Aircraft serial
30088
Aircraft time
53,529 hours, 22,189 cycles
Engine
Cfmint CFM567B27
Part
Control Valve
Part number
32911865
Part serial
GRTV6253
Condition
Leaking
Location
Nr 1 Engine
Stage of operation
CL
How discovered
O
Nature of condition
K, J
Precautionary procedure
A

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

What was found

WHITE SMOKE REPORTED BY TOWER. ENGINE INDICATIONS NORMAL, EXCEPT NR 1 ENGINE FUEL FLOW A BIT HIGHER AND FUEL CONSUMPTION 50 LBS PER MINUTE HIGHER THAN LEFT. DIVERTED. THE AIRCRAFT WAS GROUNDED. MAINTENANCE REMOVED AND REPLACED THE NR 1 ENG HPT ACC IAW AMM 75-21-01.