# SDR TQ0A20070005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2007
- Submitted: May 30, 2007
- Operation: Air carrier
- Aircraft: [N1018A](https://openairdocs.org/aircraft/N1018A), registered now
- Make and model: Dhav DHC2*
- Aircraft serial: 178
- Engine: Pwa R9855
- Engine time: 10,589 hours
- Propeller: Hartzl HCB3R304
- System (JASC): [8560 · Reciprocating Engine Supercharger](https://openairdocs.org/jasc/8560)
- Part: Supercharger
- Condition: Making Metal
- Location: Engine
- Part time: 10,589 hours
- Stage of operation: AP
- How discovered: O
- Nature of condition: O
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TQ0A20070005

## Discrepancy

ENGINE LOST SOME POWER ON DESCENT, ONCE THE PLANE LANDED, PILOT REPORTED A METAL TO METAL SOUND.  ONCE MAINTENANCE ARRIVED A LARGE AMOUNT OF OIL WAS SEEN AT THE EXHAUST TAILPIPE.  AFTER PULLING THE PROPELLER THROUGH, A HYDRAULIC LOCK OCCURED AND AT THAT POINT CREW PLACED THE AIRCRAFT ON A BARGE TO RETURN TO TOWN.  AT ENGINE REMOVAL A LARGE AMOUNT OF OIL WAS LEAKING THROUGH THE SUPERCHARGER SECTION OF THE ENGINE AND METAL CONTAMINATES WERE DISCOVERED IN THE OIL SCREEN.

---
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.