Service difficulty report · Sensor · Boeing 737990ER

Difficulty date
April 17, 2018
Submitted
April 18, 2018
Operation
Air carrier
Aircraft
N413AS
Make and model
Boeing 737990ER
Aircraft serial
35205
Aircraft time
20,387 hours, 6,652 cycles
Engine
Cfmint CFM567B27E
Part
Sensor
Part number
RP23600
Condition
Faulted
Location
Nr 2 Engine
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

WHILE WORKING L/P 11841669 FOR T25 SENSOR FAULT, FOUND ASSOCIATED FAULT CODE 75-20822. ACFT GROUNDED. VERIFIED FAULT IN RECENT FAULTS & FAULT HISTORY. FAULT IS INTERMITTENT. ALSO FOUND ASSOCIATED FAULT CODE 75-20822 ACTIVE AND INTERMITTENT. CHECKING EXTENSIVE HISTORY IN CHAPTER 73 AND 75, FOUND THREE J9 AND TWO J10 HARNESSES CHANGED, ONE EEC & TWO PT25 SENSORS CHANGED. THE SENSOR READS GOOD IN INPUT MONITORING AND EEC PASSES TEST. REMOVED AND REPLACED THE 2 ENG PT25 SENSOR IAW AMM 73-21-02-000-801-F00, & 73-21-02-400-801-F00. OPS CHECKED OK.