Service difficulty report · Engine · Boeing 737890

Difficulty date
December 23, 2016
Submitted
December 27, 2016
Operation
Air carrier
Aircraft
N593AS
Make and model
Boeing 737890
Aircraft serial
35107
Aircraft time
33,218 hours, 10,198 cycles
Engine
Cfmint CFM567B262
Part
Engine
Condition
Faulted
Location
Nr 2
Stage of operation
IN
How discovered
9
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

WHILE PERFORMING T/C 78273000, FOUND NR 2 ENGINE SHORT TERM FAULT CODE 75-30452. THE VBV POSITION SIGNALS DISAGREE. ACFT GROUNDED. ACCOMPLISHED T/C FOR NR 2 ENGINE FAULT 75-30452 IAW FIM 75-32 TASK 803. INITIAL EVALUATION TEST 12 - ACTUATORS TEST IAW AMM 71-00-00-700-807-F00. CONFIRMED FAULT AND INPUT MONITORING SHOWED CHANNEL B (LEFT) ACTUATOR POSITION FEEDBACK INCORRECT FOR COMMAND. INSPECTED LEFT VBV ACTUATOR CONNECTOR DP1008 AND PERFORMED RESISTANCE CHECK OF LEFT VBV ACTUATOR PER FIM PARAGRAPH G - ACTUATOR RESISTANCE CHECKS WITHIN LIMITS IAW TABLE 205. CLEANED CONNECTOR DP1008 IAW AMM 70-70-01-200-801-F00, REINSTALLED CONNECTOR AND PERFORMED REPAIR CONFIRMATION FOR FAULT 75-30452 IAW FIM 75-32 TASK 803 PARAGRAPH H, POWERPLANT TEST 12, ACTUATORS TEST IAW AMM 71-00-00-700-807-F00 PASSED SEVERAL TIMES WITH NO FAULTS.