# SDR P5CA2021102000400

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 19, 2021
- Submitted: October 25, 2021
- Operation: Air carrier
- Aircraft: [N454PA](https://openairdocs.org/aircraft/N454PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30812
- System (JASC): [2600 · Fire Protection System](https://openairdocs.org/jasc/2600)
- Part: None
- Condition: None
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA2021102000400

## Discrepancy

APU FIRE HANDLE LIGHT FLICKERS AND MAKES CLICKING NOISE WITH NO FIRE WARNING HORN.(<P>FOUND DAMAGED WIRE IN APU COMPARTMENT. APU FIRE DETECTION DEFERRED PER DDG 26-15-01-01B, MDDR 155418.</P> / <P>LP 1488596 - FOUND WIRE DAMAGE AT APU COMPT INSIDE WIRE # W720-452-18R AND N720-451-18R. THEN REPLACED DAMAGED WIRE PER WDM 26-15-11 AND APU FIRE WARN TEST NORMAL PER AMM 26-15-00 MDDR # 155418 CLOSED.</P> / <P> </P>)

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