ASN Wikibase Occurrence # 37080
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| Date: | Monday 5 October 1998 |
| Time: | 13:36 LT |
| Type: |  Grumman US-2B Tracker |
| Owner/operator: | California Dept Of Forestry |
| Registration: | N416DF |
| MSN: | 613/136704 |
| Total airframe hrs: | 10849 hours |
| Engine model: | Wright 1820-82B |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Banning, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | Hemet, CA (KHMT) |
| Hemet-ryan, CA (HMT | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The air tanker pilot was on a fire suppression mission with fire retardant chemicals aboard, and had made two previous drops on the fire line. Another tanker and spotter pilot witnessed the last drop approach, and reported that the pilot was turning from base leg to the westerly drop heading downwind while in a 60-degree left bank. The aircraft suddenly rolled left to 90 degrees, and at that point the left wing tip struck the terrain. The winds were estimated by the tanker pilots to be 25 to 30 mph with gusts to 40 plus from the east. The pilots also reported turbulence and bad air. Airmet Tango was issued for turbulence and isolated severe conditions mainly below 10,000 in the vicinity of canyons and passes.
Probable Cause: The pilot misjudged his maneuvering altitude. Factors to this accident were the mountainous terrain, tailwind conditions, and turbulence in the area.
Accident investigation:
 |
|
Sources:
NTSB LAX99GA005
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 01-May-2022 08:34 | Ron Averes | Updated [Operator] |
| 13-Aug-2022 19:38 | TB | Updated [Operator] |
| 14-Aug-2022 09:34 | TB | Updated [Aircraft type] |
| 29-May-2023 21:29 | Ron Averes | Updated [[Aircraft type]] |
| 04-Apr-2024 16:37 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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