# SDR 2014F00137

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2014
- Submitted: July 28, 2014
- Operation: Air carrier
- Aircraft: [N4444Z](https://openairdocs.org/aircraft/N4444Z), registered now
- Make and model: Dhav DHC2MK1
- Aircraft serial: 1307
- Aircraft time: 23,540 hours
- Engine: Pwa R985AN14B
- Engine time: 11,402 hours
- Propeller: Hartzl HCB3R304
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Stud
- Condition: Failed
- Location: Nr 1 Cylinder
- Part time: 5,000 hours
- Component: Cylinder, Pwa
- Stage of operation: CL
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2014F00137

## Discrepancy

THREE MINUTES AFTER TAKEOFF, THE PILOT EXPERIENCED A LOSS OF POWER AND SLIGHT OIL ON THE WINDSHIELD IN HIS FLOAT EQUIPED ACFT.   RETURNED TO THE WATER TAKEOFF AREA UNDER ITS OWN POWER.  VISUALLY DETERMINED THAT 6 OF THE 10 CYLINDER BASE STUD ATTACHMENTS FOR CYLINDER NR 1 HAD FAILED.

---
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.