Grumman American Avn. CORP. AA-5B accident near Sahuarita, Arizona, September 28, 2022
On September 28, 2022 at about 4:00 pm local time, a 1975 Grumman American Avn. CORP. AA-5B, an amateur-built aircraft,, registered N74349, was destroyed in an accident during landing near Sahuarita, Arizona (Flying Diamond Airport). It was a personal flight under general aviation rules (Part 91). 1 person was killed. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot's loss of control following a separation of the aileron carry-through cable.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- September 28, 2022 · about 4:00 pm local time
- Place
- Sahuarita, Arizona · Flying Diamond Airport · map
- Type
- Accident
- Injuries
- 1 person was killed.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman American Avn. CORP. AA-5B, built 1975, amateur-built · all AA-5Bs on the register
- Registration
- N74349 · registry record · serial AA5B-0203
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot departed to a nearby airport, where he completed three takeoffs and landings before returning to his home airport. Flight track data indicated that the airplane slowed to about 60 knots (kts) on the downwind leg of the traffic pattern, much slower than its speed on the downwind leg during the previous two traffic patterns. Just before turning to the base leg, the airplane diverged away from the runway, then began a 180°, accelerating, descending turn. The airplane overshot the runway centerline but corrected before crossing the approach end of the runway. The airplane then continued past the runway, where it impacted a fence and terrain about 557 ft from the departure end of the runway. The pilot was fatally injured, and the airplane was destroyed by a postimpact fire. Postaccident examination of the wreckage revealed that the aileron carry-through cable had fractured due to between-strand wear and overstress of the remaining wires. The loss of the carry-through cable degraded the aileron control system by only commanding movement of one aileron or the other, depending on which direction the pilot was turning. It is possible that the cable separated on the downwind leg of the last traffic pattern, as this was the first indication of a deviation of normal traffic pattern flight. A review of maintenance records revealed the last annual inspection, occurred on October 1, 2021, and called for inspection of control cables, specifically at the pulleys.
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 in flight during landing defining event
The NTSB's findings
- Aircraft › Aircraft systems › Flight control system › Aileron control system › Fatigue/wear/corrosion
Pilot
- Certificate: private
- Ratings: single-engine land; instrument: airplane
- Flight time: 1,126 hours in all; 59.8 in this make and model; 47 as pilot in command
- Medical certificate: BasicMed (with waivers/limitations)
- Seat: left
- Injury: fatal
The aircraft
- Airframe total time: 2,316 hours
- Last inspection: annual inspection, October 1, 2021
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming O-360 A4K (piston); 2,316 hours total
- Fire on the ground
The flight
- Flight plan: none
- Runway 25, 2,650 ft by 35 ft
Weather at the time
- Light: daylight
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 88°F (31°C), dew point 54°F (12°C)
- Altimeter: 30.10 inHg
- Observation at 9:45 am from KRYN, 13 miles away
Weather report (METAR): METAR KRYN 281645Z 10012KT 10SM CLR 31/12 A3010
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
14 documents, released by the NTSB on May 14, 2024. 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 | ADS-B Data | map file · our copy | Download |
| 2 | ADS-B Excell File | data file · our copy | Download |
| 3 | Witness Statement | PDF, 1 page · our copy | View Download |
| 4 | Interview | PDF, 1 page · our copy | View Download |
| 5 | Accident Site Survey | PDF, 8 pages · our copy | View Download |
| 6 | Airframe and Engine Examination | PDF, 34 pages · our copy | View Download |
| 7 | Materials Laboratory Factual Report Aileron Carry-through Cable | PDF, 10 pages · our copy | View Download |
| 8 | Maintenance Manual Excerpts for Carry-through Cable | PDF, 6 pages · our copy | View Download |
| 9 | Maintenance Records | PDF, 1 page · our copy | View Download |
| 10 | Photos | PDF, 5 pages · our copy | View Download |
| 11 | Pilot's Logbook | PDF, 8 pages · our copy | View Download |
| 12 | Release of Aircraft Wreckage, NTSB Form 6120.15 | PDF, 2 pages · our copy | View Download |
| 13 | Autopsy Statement | PDF, 1 page · our copy | View Download |
| 14 | Toxicological Report | PDF, 1 page · our copy | View Download |
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.
