SDR ASAA2013052794889

Service difficulty report · Probe · Boeing 737890

Difficulty date: May 27, 2013
Submitted: May 29, 2013
Operation: Air carrier
Aircraft: N516AS
Make and model: Boeing 737890
Aircraft serial: 39044
Aircraft time: 17,172 hours, 5,364 cycles
System (JASC): 7720 · Engine Temperature Indicating System
Part: Probe
Part number: TC29604
Condition: Out Of Tolerance
Location: Nr 2 Engine
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

DIAGNOSTIC REPORTS, NR 2 ENGINE TREND DATA SHOWS A SHIFT IN DELTA CRUISE AND TAKEOFF MARGIN INDICATIVE OF EGT INDICATION ERRORS. ACFT GROUNDED. ACCOMPLISHED TSR, FOUND S1 AND S4 PROBES RESISTANCE OUT OF LIMITS, R & R BOTH PROBES, OPS CK GOOD AMM 77-21-01, AND AMM 73-21-00.