# Accident 19990621007459A: Wthrly 620B, Tetonia, ID, June 21, 1999

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 21, 1999, 06:45 local time
- Place: Tetonia, ID
- Damage: Substantial damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: General operating rules (Part 91)
- Location: 43.8507° N, 111.1093° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=43.8507&lon=-111.1093&mi=10
- Aircraft: N2033N, a cancelled registration (https://openairdocs.org/deregistered/N2033N-2008-06-17) (OpenAirDocs)
- Registry model: Weatherly 620B (registry code 9630605, https://openairdocs.org/model/weatherly-620b) (OpenAirDocs)
- Reported make and model: WTHRLY 620B
- Fatal injuries: 0
- NTSB investigation: [NTSB SEA99LA089](https://openairdocs.org/ntsb/SEA99LA089) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19990621007459A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ACFT CRASHED WHILE TRANSITIONING FROM THE AERIAL APPLICATION FIELD TO THE COMPANY AIRSTRIP, OTHER CIRCUMSTANCES ARE UNKNOWN. (FROM .19) ON JUNE 21, 1999, APPROXIMATELY 0715 MOUNTAIN DAYLIGHT TIME, A WEATHERLY 620B, N2033N, COLLIDED WITH THE TERRAIN DURING AN EMERGENCY LANDING FOLLOWING A COMPLETE LOSS OF ENGINE POWER NEAR TETONIA, IDAHO. THE COMMERCIAL PILOT RECEIVED MINOR INJURIES, AND THE AIRCRAFT, WHICH WAS OWNED AND OPERATED BY THE PILOT, SUSTAINED SUBSTANTIAL DAMAGE. THE CFR PART 91 POSITION FLIGHT FROM AN AGRICULTURAL APPLICATION LANDING SITE TO THE COMPANY AIRSTRIP WAS BEING CONDUCTED IN VISUAL METEOROLOGICAL CONDITIONS. THE FLIGHT HAD BEEN AIRBORNE FOR LESS THAN FIVE MINUTES AT THE TIME OF THE OCCURRENCE. NO FLIGHT PLAN HAD BEEN FILED, AND THERE WAS NO REPORT OF AN ELT ACTIVATION. ACCORDING TO THE PILOT, JUST AFTER HE LEVELED OFF ABOUT 200 FEET ABOVE THE GROUND, THE ENGINE LOST ALL POWER WITHOUT ANY PREVIOUS SIGN OF IMPENDING MALFUNCTION. HE THEREFORE MADE AN EMERGENCY LANDING IN A NEARBY FIELD AND IMPACTED THE ROUGH TERRAIN DURING THE PROCESS.                                                        (-23) AFTER LEVELING AT 200 FT. AGL DURING FERRY FLIGHT TO RESIDENCE, THE E NGINE QUIT AND SPOOLED DOWN. DURING THE EMERGENCY LANDING THAT FOLLOWED THE AIRCRAFT HIT ROUGH TERRAIN IN THE PROCESS OF LANDING.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA99LA089](https://openairdocs.org/ntsb/SEA99LA089), Jun 21, 1999: Weatherly 620B (N2033N), Tetonia, ID, substantial damage. Probable cause: A failure of the right magneto drive gear shaft. Factors include the absence of any suitable terrain on which to perform an emergency landing, and the rough/uneven condition of the terrain on which…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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