# SDR 9WGA2023061145201

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 11, 2023
- Submitted: June 13, 2023
- Operation: Air carrier
- Aircraft: [N452SN](https://openairdocs.org/aircraft/N452SN), registered now
- Make and model: Boeing 747-48E
- Registry model: [Boeing 747-48E](https://openairdocs.org/model/boeing-747-48e) (OpenAirDocs)
- Aircraft serial: 25452
- Aircraft time: 121,619 hours, 20,219 cycles
- System (JASC): [7700 · Engine Indicating System](https://openairdocs.org/jasc/7700)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CL
- How discovered: V
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9WGA2023061145201

## Discrepancy

DISCREPANCY: HIGH EGT DURING CLIMB. POWER REDUCED, EGT REMAINS WITHIN LIMITS. CORRECTIVE ACTION: REMOVED AND REPLACED UPR AND LWR EGT HARNESS IAW B747 AMM 77-21-02.  REMOVED AND REPLACED FOUR EGT PROBES IAW B747 AMM 77-21-01.

---
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.