Bell 206B-III N2773R
11 December 1993 · Flagstaff, Arizona, United States · No injuries
Summary
On 11 December 1993 at about 00:00 local time, a Bell 206B-III registered N2773R, operated by Warren Smith, was involved in an accident near Flagstaff, Arizona, United States. 2 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 00:00
- Classification
- Accident
- Location
- Flagstaff, Arizona, United States
- Coordinates
- 35.2899, -111.3209
- Aircraft
- Bell 206B-III
- Registration
- N2773R
- Category
- Helicopter
- Engines
- 1
- Operator
- Warren Smith
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- LAX94LA075
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 0 | 2 |
Probable cause
The pilot's improper initiation of an emergency autorotation into unsuitable terrain and subsequent hard landing and rollover. A false annunciator indication, a failure of the N1 tach generator, the pilot's continued flight with a known aircraft defect, and the pilot's improper identification of the failed N1 gauge were factors in this accident.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
FOLLOWING AN ANNUAL INSPECTION, THE HELICOPTER HAD EXPERIENCED AN INTERMITTENT ILLUMINATION OF THE 'ENGINE OUT' ANNUNCIATOR LIGHT. THE PILOT CONTINUED FLYING AND MONITORED THE ENGINE INSTRUMENTS, PARTICULARLY THE N2 POWER TURBINE GAUGE. DURING THE ACCIDENT FLIGHT, THE ANNUNCIATOR AGAIN FLICKERED AND THEN STAYED ON. IN ADDITION, THE 'ENGINE OUT' HORN ALSO SOUNDED; HOWEVER, THE ENGINE PARAMETERS REMAINED NORMAL. THE ANNUNCIATOR LIGHT AND HORN WILL ACTIVATE IF THE N1 GAS PRODUCER FALLS BELOW 55 PERCENT. THE PILOT REPORTED THAT DURING A TURN, THE N2 BEGAN DECREASING AND HE ENTERED AN AUTOROTATION. THE HELICOPTER ROLLED OVER FOLLOWING A HARD LANDING. POSTACCIDENT TESTS REVEALED THAT THE ENGINE OPERATED WITHIN NORMAL SPECIFICATIONS. THE N2 TACH GENERATOR OPERATED NORMAL. THE N1 TACH GENERATOR FAILED.
Quoted verbatim from the NTSB record.
Other Bell 206 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 8 Feb 1993 | Bell 206L-1 | Vermillion 39 | Petroleum Helicopters | Minor injuries | - |
| 25 Oct 1993 | Bell 206B | High Island 467 | - | Minor injuries | - |
| 29 Oct 1993 | Bell 206B | W. Cameron 240 | Seahawk Services, Ltd. | Fatal | 1 |
| 29 Oct 1993 | Bell 206L-3 | Gulf of Mexico | - | No injuries | - |
| 23 Feb 1993 | Bell 206B | Oklahoma City, Oklahoma, United States | Jonhnson, James P. | Minor injuries | - |
| 30 Jun 1993 | Bell 206L-3 | Agoura Hills, California, United States | - | Minor injuries | - |
All 1,732 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 25 Jan 1993 | Piper PA-23-150 | Eloy, Arizona, United States | R.finkenbine & R. Kestler | Serious injuries | - |
| 8 Aug 1993 | Bell 206L1 | Tusayan, Arizona, United States | Papillon Airways, Inc. | Serious injuries | - |
| 26 Nov 1993 | Bellanca 8KCAB | Buckeye, Arizona, United States | LOU ANN Behringer | Minor injuries | - |
| 1 May 1993 | Mooney M20J | Sedona, Arizona, United States | - | Fatal | 2 |
| 26 Apr 1993 | Beechcraft 58 | Tucson, Arizona, United States | JAY M. Supkoff | Fatal | 2 |
| 3 Dec 1993 | Braegger GL NIEUPORT 17 | Chandler, Arizona, United States | Michael K. Braegger | No injuries | - |