Cessna 170B accident near Boise, Idaho, April 17, 2022
On April 17, 2022 at about 5:45 pm local time, a 1956 Cessna 170B, registered N2929D, was substantially damaged in an accident during landing (landing roll) near Boise, Idaho (Boise Air Terminal airport). It was an instructional flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot receiving instructions failure to maintain directional control during landing. Contributing to the accident was the flight instructor’s delayed remedial action.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 17, 2022 · about 5:45 pm local time
- Place
- Boise, Idaho · Boise Air Terminal · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 170B, built 1956 · all 170Bs on the register
- Registration
- N2929D · no longer on the register · serial 26872
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The flight instructor reported that, the pilot receiving instruction performed a wheel landing in the tailwheel equipped airplane. During the landing roll, with the tailwheel still off the ground, the airplane drifted left, which was counteracted with right rudder control. Shortly after, the right wing suddenly lifted, and the airplane veered to the right. Despite left rudder input, the airplane ground looped to the right. During the ground loop, the left main landing gear axle bolts broke, and the left wing was substantially damaged when it struck the ground. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. He added that he felt the loss of control was due to a dust devil. At the time of the accident, the pilot was landing the airplane on runway 10R with wind from 180° at 4 knots.
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
- Loss of control on ground during landing (landing roll) defining event
The NTSB's findings
- Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Directional control › Not attained/maintained
- Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
- Personnel issues › Action/decision › Action › Delayed action › Instructor/check pilot
Flight instructor
- Certificate: airline transport pilot, flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; single-engine sea; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Flight time: 7,152 hours in all; 900 in this make and model; 73 in the last 90 days; 14 in the last 30 days; 7,071 as pilot in command; 3,264 on instruments
- Last flight review: March 10, 2022
- Medical certificate: Class 2 (with waivers/limitations)
- Seat: rgt
- Injury: no injuries
Pilot
- Certificate: private
- Ratings: single-engine land
- Flight time: 268.6 hours in all; 4.5 in this make and model; 5.8 in the last 90 days; 5.8 in the last 30 days; 18.3 as pilot in command
- Last flight review: March 12, 2021
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: left
- Injury: no injuries
The aircraft
- Airframe total time: 5,173 hours
- Last inspection: annual inspection, December 5, 2021; 5 hours since
- Maximum gross weight: 2,200 lb
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming IO-360-M1B (piston); 4,913 hours total
The flight
- Flight plan: none
- Runway 10R, 9,763 ft by 150 ft
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 180° at 4 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 46°F (8°C), dew point 21°F (-6°C)
- Altimeter: 30.29 inHg
- Observation at 11:53 am from KBOI
Weather report (METAR): KBOI 171753Z 18004KT 10SM CLR 08/M06 A3029 RMK AO2 SLP265 T00781061 10083 21011 51009 $
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 2 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
2 documents, released by the NTSB on July 8, 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, 10 pages | View Download |
| 2 | Photo Array | PDF, 1 page | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
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.