Diamond Aircraft Ind INC DA 40 accident near Cedar City, Utah, April 24, 2022
On April 24, 2022, a 2004 Diamond Aircraft Ind INC DA 40, registered N321PF, was destroyed in an accident during enroute near Cedar City, Utah (Cedar City Rgnl airport). It was a personal flight under general aviation rules (Part 91). 4 people were killed. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot’s failure to maintain obstacle clearance, which resulted in controlled flight into terrain. Contributing to the accident was the pilot’s decision to operate the airplane above its maximum gross weight.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 24, 2022
- Place
- Cedar City, Utah · Cedar City Rgnl · map
- Type
- Accident
- Injuries
- 4 people were killed.
- Weather
- visual conditions (good weather)
- Aircraft
- Diamond Aircraft Ind INC DA 40, built 2004
- Registration
- N321PF · registry record · serial 40.375
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
Witnesses traveling near the accident site reported that they observed the accident airplane flying on an easterly heading about 200 to 300 ft above ground level. The airplane did not appear to be in distress. After the airplane passed over the witnesses’ positions, the airplane maneuvered as if the pilot were trying to turn it around. One witness stated that the airplane’s wings were almost completely vertical at that point. The airplane subsequently impacted mountainous terrain about 7 miles southeast of the departure airport. A postcrash fire ensued. Postaccident examination of the airplane revealed no evidence of a pre-existing mechanical malfunction that would have precluded normal operation. A review of the airplane’s weight and balance information showed that, at the time of departure, the airplane was about 128 pounds over the airplane’s maximum gross weight of 2,646 pounds. The airplane was also outside the approved center-of-gravity envelope. The calculated density altitude at the time of departure was about 6,022 ft. The calculated fuel use from the departure airport to the accident location was about 5 gallons. Thus, at the time of the accident, the airplane was likely about 98 pounds over the maximum gross weight. The calculated density altitude at the accident location and the time of the accident was about 7,203 ft. The calculated climb performance for the airplane, at its assumed altitude and air density conditions, would have about 300 ft per minute. The excessive airplane weight likely limited the airplane’s ability to climb in mountainous terrain.
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
- Controlled flight into terrain or object (CFIT) during enroute defining event
The NTSB's findings
- Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
- Aircraft › Aircraft oper/perf/capability › Aircraft capability › Climb capability › Attain/maintain not possible
- Environmental issues › Physical environment › Terrain › Mountainous/hilly terrain › Effect on equipment
Pilot
- Certificate: private
- Ratings: single-engine land
- Flight time: 91 hours in all
- Last flight review: September 6, 2021
- Medical certificate: Class 1 (without waivers/limitations)
- Seat: frt
- Injury: fatal
Passenger
- Seat: rear
- Injury: fatal
Passenger
- Seat: frt
- Injury: fatal
Passenger
- Seat: rear
- Injury: fatal
The aircraft
- Airframe total time: 5,900 hours
- Last inspection: 100-hour inspection, April 4, 2022; 22 hours since
- Maximum gross weight: 2,535 lb
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming IO-360-MIA (piston); 5,900 hours total
- Operator: Platinum Aviation
The flight
- Departed from: CDC Cedar City UT
- Destination: BCE Bryce Canyon UT
- Flight plan: none
Weather at the time
- Light: daylight
- Wind: from 020° at 8 knots
- Visibility: 10 statute miles
- Sky: a few clouds at 9,500 ft
- Temperature: 48°F (9°C), dew point 18°F (-8°C)
- Altimeter: 30.10 inHg
- Observation at 6:53 pm from KCDC, 7 miles away
Weather report (METAR): KCDC 240053Z AUTO 02008KT 10SM FEW095 09/M08 A3010 RMK AO2 SLP177 T00941083
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 3 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
15 documents, released by the NTSB on August 23, 2023. 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, 9 pages | View Download |
| 2 | Witness Statements | PDF, 7 pages | View Download |
| 3 | Weight and Balance and Performance Summary | PDF, 4 pages | View Download |
| 4 | Airplane Weight and Balance | PDF, 1 page | View Download |
| 5 | Operator Fuel Receipt for 321PF at Kspk | PDF, 2 pages | View Download |
| 6 | Cedar City Self Serve Fuel Log N321PF | PDF, 2 pages | View Download |
| 7 | Accident Site Examination | PDF, 7 pages | View Download |
| 8 | Airframe and Engine Exam | PDF, 7 pages | View Download |
| 9 | Photo Array | PDF, 4 pages | View Download |
| 10 | Memo for Record Pilot Autopsy | PDF, 2 pages | View Download |
| 11 | Pilot Toxicological Report | PDF, 1 page | View Download |
| 12 | Memo for Record Passenger Autopsy | PDF, 1 page | View Download |
| 13 | Passenger Toxicological Report | PDF, 1 page | View Download |
| 14 | Release of Aircraft Wreckage, NTSB Form 6120.15 | PDF, 1 page | View Download |
| 15 | Statement of Party Representatives to NTSB Investigation | PDF, 14 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 N321PF the same tail number, which may have belonged to a different aircraft at the time
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number WPR22FA164.
