# SDR ASAA2013012393740

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2013
- Submitted: January 29, 2013
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41730
- Aircraft time: 743 hours, 271 cycles
- System (JASC): [7710 · Power Indicating System](https://openairdocs.org/jasc/7710)
- Part: Sensor
- Part number: 3205490040
- Condition: Malfunctioned
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013012393740

## Discrepancy

DIAGNOSTIC REPORTS NR 1 ENG VIBRATION INTERMITTENT.   ACCOMPLISHED RESISTANCE CHECKS IAW FIM TASK 77-31-805, PARA E (1).-(3).  NO DEFECTS NOTED. REINSTALLED AVM. OPS TEST NORMAL REF MM 77-31-03.  REF STEP 3.  PRECAUTIONARY R & R NR 1 ENGINE N2 SPEED SENSOR.  REF MM 77-11-02.  NO LEAKS NOTED, EEC BITE TEST PASSED REF MM 71-00-00.  COMPLETED AVM SYS -OPS TEST TASK 77-31-00-710-801-F00 STEPS (5)-(7),(9)-(12) NO DEFECTS NOTED, ENG RUN NORMAL.

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