Amateur-built DH-6 TWIN OTTER accident near Ago-6, Ay, December 12, 1999
On December 12, 1999, a amateur-built DH-6 TWIN OTTER, registered CGKBG, was destroyed in an accident near Ago-6. It was an other work-use flight under non-U.S. private rules. 1 person had minor injuries; 1 other was unhurt. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- December 12, 1999
- Place
- Ago-6, AY
- Type
- Accident
- Injuries
- 1 person had minor injuries; 1 other was unhurt.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built DH-6 TWIN OTTER DH-6 TWIN
- Registration
- CGKBG · no longer on the register
- Damage
- Destroyed
- Flight
- Other work-use flight · non-U.S. private rules
The factual record from the NTSB's investigation tables, in plain English
The aircraft
- Last inspection: inspection type not recorded
- Landing gear: fixed
- Not recorded
- Operator: National Science Foundation
The flight
- Destination: Mcmurdo Station
- Flight plan: not recorded
- Runway 0
Weather at the time
- Light: not reported
- Wind: from 130° at 5 knots
- Visibility: 99 statute miles
- Sky: not recorded; clear
- Temperature: -29°F (-34°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.