# Incident 20121027023439I: Dehavilland DHC-6 TWIN OTTER, Wainwright, AK, October 27, 2012

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: October 27, 2012, 15:17 local time
- Place: Wainwright, AK
- Damage: No damage
- Phase of flight: Cruise/Level Flight
- Operating rules: Air taxi and commuter (Part 135)
- Operator: YQPA
- Location: 70.6463° N, 159.9585° W: Placed by OpenAirDocs: center of Wainwright, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=70.6463&lon=-159.9585&mi=10
- Aircraft: N716JP, a cancelled registration (https://openairdocs.org/deregistered/N716JP-2019-08-21) (OpenAirDocs)
- Registry model: Dehavilland DHC-6-300 (registry code 2802630, https://openairdocs.org/model/dehavilland-dhc-6-300) (OpenAirDocs)
- Registry engine: Pratt & Whitney PT6A-27 series (registry code 52141, https://openairdocs.org/engine/pratt-whitney-pt6a-27-series) (OpenAirDocs)
- Reported make and model: DEHAVILLAND DHC-6 TWIN OTTER
- Reported engine: PRATT & WHITNEY PT6A-28
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport
- Pilot flight hours: 15,000 total, 2,500 in this make and model, 108 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20121027023439I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

THE OPERATOR WAS CONDUCTING SURVEY OPERATIONS WHICH REQUIRE THE AIRCRAFT  TO BE FLOWN AT A SPECFIC SPEED AND ALTITUDE.  THE PILOT WAS IN THE PROCESS OF SLOWING DOWN THE AIRCRAFT BY LOWERING THE FLAPS AND MAINTAINING THE PROPER ALTITUDE AND AIR SPEED TO PERFORM THE SURVEY. SUBSEQUENTLY, THE PILOT NOTICED THE NOSE OF THE AIRCRAFT WAS HEAVY AFTER HE HAD POSITIONED THE FLAPS ABOUT 10 DEGREES TO MAINTAIN THE CORRECT AIR SPEED.  THE PILOT BEGAN TO MAKE A VISUAL SWEEP OF THE AIRCRAFT INSTRUMENTS AND NOTICED THE FLAP INDICATOR INDICATED 10 DEGREES, HOWEVER THE HYDRAULIC PUMP PRESSURE GAUGE WAS READING ZERO.  THE PILOT INITIATED EMERGENCY PROCEDURES AND DEACTIVATED THE APPROPRIATE CIRCUIT BREAKER AND USED THE HYDRAULIC HAND PUMP TO LOWER THE FLAPS AND LANDED AT WAINWRIGHT WITHOUT FURTHER INCIDENT.  PILOT IN RIGHT SEAT (A&P) CONTACTED HIS DIRECTOR OF MAINTENANCE FOR INSTRUCTIONS.  TROUBLE SHOT THE SYSTEM ACCORDING TO THE MANUFACTURER'S PROCEDURES AND COULD NOT DUPLICATE THE FAILURE.  PIC ENTERED THE APPROPRIATE DISCREPANCY INTO THE FLIGHT LOG AND THE APPROPRIATE CORRECTIVE ACTION AND THE AIRCRAFT WAS RETURNED TO SERVICE.

## Other reports on N716JP (1)

Matched to the same aircraft by N-number and date.

- [Accident 20180320009749A](https://openairdocs.org/incident/20180320009749A), Mar 20, 2018: Dehavilland DHC-6 TWIN OTTER (N716JP), Deadhorse, AK, Substantial damage. At approximately 1945 on March 20, 2018 a part 135 flight with three passengers onboard departed a remote ice strip approximately 140 miles north of prudhoe…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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