- Difficulty date
- May 29, 2015
- Submitted
- May 29, 2015
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35190
- Aircraft time
- 28,263 hours, 8,729 cycles
- Engine
- Cfmint CFM567B27B3
- Part
- Probe
- Part number
- TC29604
- Condition
- Unknown
- Location
- Nr 1 Engine
- 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
DIAGNOSTIC REPORTS, NR 1 ENGINE TREND DATA SHOWS A SHIFT IN DELTA CRUISE AND TAKEOFF MARGIN INDICATIVE OF EGT INDICATION ERRORS. PRI:1 ETOPS SIGNIFICANT SYS. ACFT GROUNDED. ACCOMPLISHED TSR. REPLACED S4 T49.5 PROBE, REF AMM 77-21-01. OPS CHECKED GOOD REF AMM 71-00-00.