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| Date: | Wednesday 15 June 2005 |
| Time: | 23:45 LT |
| Type: |  ATR 42-300 |
| Owner/operator: | Northern Air Cargo |
| Registration: | N42NC |
| MSN: | 67 |
| Total airframe hrs: | 23799 hours |
| Engine model: | Pratt & Whitney Canada PW120 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Anchorage, Alaska -
 United States of America
|
| Phase: | Unknown |
| Nature: | Unknown |
| Departure airport: | Fairbanks International Airport, AK (FAI/PAFA) |
| Anchorage-Ted Stevens International Airport, AK (ANC/PANC) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The Title 14, CFR Part 121 cargo flight was about 32 miles north of the destination airport, descending for landing in instrument meteorological conditions, when it was struck by lightning. The radar and several electrical systems were knocked off-line by the strike. Most of the systems were restored, and the airplane landed without incident. The pilot reported that after takeoff, they deviated around a thunderstorm, and that there were numerous thunderstorms in the area. The pilot said after clearing the thunderstorm, they were flying in clear air. He said along the route, most of the observed thunderstorms were behind them, and that they entered instrument meteorological conditions in a large area of cloud cover. As they started a normal descent for the destination airport in smooth air, he indicated that he and the first officer simultaneously noticed that the radio magnetic indicator needles "spun around in different directions," and that an "instant later" they were struck by lightning. He did not indicate what was observed on the radar screen. The pilot did not report any mechanical anomalies prior to the lightning strike. Portions of the left aileron's lightning strike protection were de-bonded by the strike, and the aileron was replaced.
Probable Cause: A lightning strike during a normal descent for landing, which resulted in structural damage to the airplane's left aileron.
Accident investigation:
 |
|
Sources:
NTSB ANC05LA088
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Oct-2022 08:12 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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