# SDR UIEA200400034

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 29, 2004
- Submitted: August 23, 2004
- Operation: Air carrier
- Aircraft: N526MC
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 22337
- Engine: Ge CF650E2
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Part number: 51291009
- Condition: Chafed
- Location: Nr 2 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: E, J, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200400034

## Discrepancy

AT APPROXIMATELY 10,000 FT, NR 2 ENIGNE 'A' LOOP WAS INDICATING 7 UNITS, 'B' LOOP INDICATING 2.5.  COMPLETED FHB 3.26.10 PROCEDURES NACELLE TEMPERATURE INDICATION ABNORMAL.  RETARDED THROTTLE NO CHANGE, 30 SECON LATER 'A' LOOP INDICATES 9 PLUS, 'B' LOOP FLUCTUATES BETWEEN 2.5 AND 7.5.  ENGINE FAILURE SHUTDOWN CHECKLIST ACCOMPLISHED.  NR 2 ENGINE 'B' LOOP FOUND CHAFFING WIRES.  REPAIRED WIRES AS PER SWPM 20-20-00 AND OPERATION CHECK SATISFACTORY AS PER MM 26-01-00.  (M)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.