ASN Wikibase Occurrence # 36073
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| Date: | Wednesday 4 March 1992 |
| Time: | 21:15 LT |
| Type: |  Aérospatiale AS 350D |
| Owner/operator: | Southwest Helicopters |
| Registration: | N350AH |
| MSN: | 1478 |
| Total airframe hrs: | 2183 hours |
| Engine model: | Lycoming LTS 101-600A3 |
| Fatalities: | Fatalities: 2 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Fort Grant, Arizona -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Tucson, AZ (38E) |
| Safford, AZ (NONE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AFTER RECEIVING THE REQUEST FOR A MEDICAL EVACUATION MISSION, THE CREW CHECKED WEATHER WITH AN FAA FSS TO DETERMINE IF THE MISSION WOULD BE ACCEPTED. GROUND CLUTTER ON THE WEATHER RADAR PREVENTED A COMPLETE WEATHER BRIEF FOR ENROUTE MOUNTAINOUS AREAS. THE PILOT GOT WEATHER FOR HIS DEPARTURE POINT. THE PILOT TOLD FSS '...I THINK I CAN MEANDER MY WAY THROUGH THE MOUNTAINS ON THAT ONE.' THE PILOT ACCEPTED THE MISSION. AFTER TAKEOFF THE PILOT WAS TOLD BY FAA DEPARTURE CONTROL THERE WAS 'WEATHER' ON HIS ROUTE OF FLIGHT 'BUT THE INTENSITY IS UNKNOWN.' RADAR SERVICE WAS TERMINATED AND THE CREW CONTINUED. THE SURVIVING CREWMEMBER STATED THAT AS THE FLIGHT PROGRESSED, EVERYTHING GOT 'BLACK.' HE SAID HE COULD NOT SEE OUTSIDE THE AIRCRAFT. HE SAID ABOUT 5 MINUTES BEFORE THE CRASH, THE PILOT TOLD THE CREW '...WE ARE GOING INADVERTENT.' MEANING, THEY WERE GOING INTO THE CLOUDS AND HE WOULD BE FLYING BY INSTRUMENTS. THE SURVIVOR SAID HE HEARD THE 'ALTITUDE BUZZER,' FOLLOWED BY THE IMPACT.
Probable Cause: 1) THE PILOT INADEQUATELY EVALUATING THE ENROUTE WEATHER CONDITIONS, AND, 2) THE PILOT MAKING THE INFLIGHT DECISION TO CONTINUE VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS. FACTORS IN THIS ACCIDENT WERE THE INABILITY OF THE PILOT TO SEE THE MOUNTAINOUS TERRAIN DUE TO THE AMBIENT LIGHT CONDITIONS, CLOUDS, AND SNOW.
Accident investigation:
 |
|
Sources:
NTSB LAX92FA136
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=350AH
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 01-Jul-2014 21:43 | Dr. John Smith | Updated [Time, Location, Nature, Departure airport, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:22 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 11-Apr-2024 08:42 | ASN Update Bot | Updated [Time, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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