# Accident 20050307002619A: Dhav DHC2MKI, Talkeetna, AK, March 7, 2005

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: March 7, 2005, 11:20 local time
- Place: Talkeetna, AK
- Airport: Talkeetna Airport
- Damage: Substantial damage
- Phase of flight: Normal Cruise
- Operating rules: Air taxi and commuter (Part 135)
- Operator: A3WC
- Location: 63.2917° N, 150.0917° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=63.2917&lon=-150.0917&mi=10
- Aircraft: N3307S, a cancelled registration (https://openairdocs.org/deregistered/N3307S-2015-05-15) (OpenAirDocs)
- Registry model: Dehavilland DHC-2 MK. I(L20A) (registry code 2808002, https://openairdocs.org/model/dehavilland-dhc-2-mk-i-l20a) (OpenAirDocs)
- Registry engine: Pratt & Whitney R-985 series (registry code 52008, https://openairdocs.org/engine/pratt-whitney-r-985-series) (OpenAirDocs)
- Reported make and model: DHAV DHC2MKI
- Reported engine: PWA R985AN14B
- People aboard: 4
- Fatal injuries: 0
- Pilot flight hours: 12,850 total, 260 in this make and model, 8 in the last 90 days
- NTSB investigation: [NTSB ANC05LA046](https://openairdocs.org/ntsb/ANC05LA046) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20050307002619A

## Narrative

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

(-23) THE AIRLINE TRANSPORT RATED PILOT REPORTED HE WAS FLYING A DHC II BEAVER N3307S IN CRUISE CONDITION AT AN ALTITUDE OF 11000 FT. THE FLIGHT WAS FOR THE PURPOSE OF A TOUR AROUND MT MCKINLEY AMERICAS HIGHEST PEAK. DURING THE CLIMB THE PILOT SAID HE FELT LIGHT TURBULENCE AND TOLD THE PASSENGERS TO CHECK THE SECURITY OF THEIR SEAT BELTS. AT THE POINT HE LEVELED OFF FOR CRUISE FLIGHT HE FELT A VIBRATION IN THE ELEVATOR CONTROL DEVELOP, IT RAPIDLY BECAME WORSE. HE SAID THE OUTBOARD ENDS OF THE WINGS WERE LITERALLY FLAPPING RAPIDLY AND THE AIRCRAFT WAS SHAKING SO BAD THE CONTROL COLUMN WAS A BLUR. THE PILOT SAID THE CONTROL WHEEL WAS NOT TURNING THAT MUCH, BUT THE RUDDER PEDALS WERE GOING BACK AND FORTH SO HARD AND RAPIDLY THAT HE COULD NOT STOP THEM WITH ALL THE STRENGTH HE HAD IN HIS LEGS. HE SAID HE FELT SURE THE AIRCRAFT WAS COMING APART SO HE PULLED THE THROTTLE MIXTURE AND PROP BACK AND CALLED THREE MAYDAYS ON THE MOUNTAIN FREQUENCY 122.7. HE THEN PULLED BACK ON THE COLUMN AND LOWERED THE AIRSPEED TO 50K AND VIBRATION STOPPED. THE PILOT THEN LOWERED THE FLAPS TO 15 DEGREES AND FLEW BACK TO TALKEETNA AT A SLOW AIRSPEED WITHOUT FURTHER PROBLEMS.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ANC05LA046](https://openairdocs.org/ntsb/ANC05LA046), Mar 7, 2005: de Havilland DHC-2 (N3307S), Talkeetna, AK, substantial damage. Probable cause: Aerodynamic flutter of the ailerons during normal cruise flight due to their improper maintenance/balancing, which resulted in structural damage to the airplane's wings.

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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