# SDR DHLA200700093

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2007
- Submitted: December 28, 2007
- Operation: Air carrier
- Aircraft: [N750DH](https://openairdocs.org/aircraft/N750DH), registered now
- Make and model: Boeing 727-2M7
- Registry model: [Boeing 727-2M7](https://openairdocs.org/model/boeing-727-2m7) (OpenAirDocs)
- Aircraft serial: 21951
- Aircraft time: 39,318 hours, 21,873 cycles
- Engine: Pwa JT8D15A
- System (JASC): [2613 · Overheat Detection](https://openairdocs.org/jasc/2613)
- Part: Overheat Loop
- Condition: Misrouted
- Location: Nr 1 Nacelle
- Stage of operation: CR
- How discovered: O
- Nature of condition: W, N
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DHLA200700093

## Discrepancy

NR 1 STRUT OVERHEAT LIGHT AFTER T/O PERFORMED NORMAL SHUTDOWN NR 1 ENGINE PER PROCEDURE.  FOUND 4 DUCT CONNECTIONS LEAKING ON DUCT FROM PRECOOLER TO THE ENG.  REMOVED AND REINSTALLED DUCTS PER 727 M/M 36-00-01 (DUCTS WERE MIS-ALIGNED) ALSO FOUND NR 1 PYLON OVERHEAT LOOP MIS-ROUTED-REROUTED PER 727 M/M 26-14-01.  SYS GRND CKS GOOD AFTER 10 MIN AT TAKEOFF PWR PER M/M 36-00-00 AND M/M 26-14-00.  OK FOR CONTINUED SERVICE.

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