Amateur-built MUSTANG II accident near Upland, California, June 10, 1988
On June 10, 1988 at about 9:30 pm local time, a amateur-built MUSTANG II, registered N1AZ, suffered minor damage in an accident near Upland, California. It was a personal flight under general aviation rules (Part 91). 1 person was seriously injured and 1 person had minor injuries. The weather was visual conditions (good weather).
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The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 10, 1988 · about 9:30 pm local time
- Place
- Upland, California · map
- Type
- Accident
- Injuries
- 1 person was seriously injured and 1 person had minor injuries.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built MUSTANG II
- Registration
- N1AZ · registry record · serial 495
- Damage
- Minor damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
DURING A PLEASURE FLIGHT, WHILE FLYING S TURNS AND LAZY EIGHTS, THE CANOPY SUDDENLY SEPARATED FROM THE AIRPLANE. THE AIRPLANE WAS LANDED WITHOUT FURTHER INCIDENT. THE CANOPY WAS NOT RECOVERED. THE REASON FOR THE SEPARATION WAS NOT DETERMINED.
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
- AIRFRAME/COMPONENT/SYSTEM FAILURE/MALFUNCTION during maneuvering
Pilot
- Ratings: single-engine land, none, none, none
- Flight time: 2,000 hours in all; 250 in this make and model
- Medical certificate: class 2
The aircraft
- Last inspection: type not recorded, May 2, 1988
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-320-A28 (piston); 0 hours total
- Operating certificate: in the vicinity
The flight
- Flight plan: VFR
- Runway 0
- A second pilot was aboard
Weather at the time
- Light: daylight
- Visibility: 7 statute miles
- Sky: clear
- Temperature: 75°C, dew point 0°C
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 1 |
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 docket at the NTSB holds the report as a PDF and the investigation's photographs and documents. This site 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 LAX88DUG04.