- Difficulty date
- January 20, 2015
- Submitted
- January 20, 2015
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 41188
- Aircraft time
- 10,492 hours, 3,146 cycles
- Engine
- Cfmint CFM567B27
- Part
- Sensor
- Part number
- 3204590030
- Condition
- Intermittent
- Location
- N2 Speed
- 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
NR 1 ENGINE ACMS DATA SHOWS INTERMITTENT N2 VALUES FROM OIP REPORT 7. TAKEOFF AND CRUISE ACMS REPORTS SHOW NORMAL PARAMETERS. ACFT GROUNDED. REMOVE N2 SENSOR NR 1 ENGINE REF AMM 77-11-02-000-801-F00. INSTALL N2 SENSOR REF 77-11-02-400-801-F00. ACCOMPLISH N2 SPEED SENSOR INSTALLATION TEST REF AMM 71-00-00-700-801-F00 & 71-00-00-700-805-F00.