Aviat Aircraft INC A-1B accident near Swan Valley, Idaho, March 30, 2022
On March 30, 2022 at about 6:00 pm local time, a 2007 Aviat Aircraft INC A-1B, registered N35AH, was substantially damaged in an accident during landing (landing roll) near Swan Valley, Idaho (Diamond Airstrip airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot’s failure to maintain airplane control during the landing roll on a snow-covered runway surface.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- March 30, 2022 · about 6:00 pm local time
- Place
- Swan Valley, Idaho · Diamond Airstrip · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Aviat Aircraft INC A-1B, built 2007 · all A-1Bs on the register
- Registration
- N35AH · registry record · serial 2417
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot reported that, during a landing on a snow-covered, private grass airstrip, he did not adequately confirm the landing surface condition. Subsequently, as the airplane slowed down during the landing roll, the landing gear penetrated through a shallow layer of hard packed snow and then dug into several inches of snow, which caused the airplane to nose over. The airplane sustained substantial damage to the right wing. The pilot reported no preaccident malfunctions or failures with the airplane that would have precluded normal operation.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Nose over/nose down during landing
- Loss of control on ground during landing (landing roll) defining event
The NTSB's findings
- Personnel issues › Action/decision › Info processing/decision › Identification/recognition › Pilot
- Environmental issues › Physical environment › Runway/land/takeoff/taxi surface › Snow/slush/ice covered surface › Effect on equipment
- Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
Pilot
- Certificate: commercial pilot
- Ratings: single-engine land; rotorcraft: glider
- Flight time: 1,955 hours in all; 443 in this make and model; 13.6 in the last 90 days; 7 in the last 30 days; 1,894 as pilot in command
- Last flight review: June 15, 2021
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: frt
- Injury: minor injuries
The aircraft
- Airframe total time: 1,082 hours
- Last inspection: annual inspection, April 1, 2021
- Maximum gross weight: 2,200 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming IO-360-A1D6 (piston); 1,082 hours total
The flight
- Departed from: IDA Idaho Falls ID at 5:30 pm
- Flight plan: none
- Runway 10/2, 2,000 ft by 90 ft
Weather at the time
- Light: daylight
- Wind: from 070° at 4 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 37°F (3°C), dew point 19°F (-7°C)
- Altimeter: 30.00 inHg
- Observation at 12:56 pm from KDIJ, 18 miles away
Weather report (METAR): KDIJ 301856Z AUTO 07004KT 10SM CLR 03/M07 A3000 RMK AO2 SLP178 T00331067
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
2 documents, released by the NTSB on June 30, 2022. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.
| # | Document | What it is | |
|---|---|---|---|
| 1 | Pilot/operator Aircraft Accident Report, NTSB Form 6120.1 | PDF, 11 pages | View Download |
| 2 | Accident Pictures | PDF, 2 pages | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
Other NTSB records under N35AH the same tail number, which may have belonged to a different aircraft at the time
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.