Schempp-Hirth Discus 2b accident near Peoria, Arizona, May 9, 2005
On May 9, 2005, a Schempp-Hirth Discus 2b (glider), registered N15MM, was substantially damaged in an accident near Peoria, Arizona (Pleasant Valley 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).
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The NTSB's probable cause their words, unchanged
the glider pilot encountered a downdraft that forced him to land in rough terrain.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 9, 2005
- Place
- Peoria, Arizona · Pleasant Valley · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Schempp-Hirth Discus 2b · all Discus 2bs on the register
- Registration
- N15MM · registry record · serial 129
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The glider was damaged during a forced landing 1.5 miles south of the landing strip in rocky desert terrain. The pilot was on a circular cross-country flight designed to depart, and then return to the same airport. Along the route there were numerous navigation turn points to maintain a proper track on the course. About 250 miles into the flight, and at the second to last turn point, the pilot determined that he did not have enough altitude to make it to the last turn point before heading back to the airport. His flight computer indicated that he had enough altitude to go directly to the destination airport with a 1,000-foot altitude margin. While returning he encountered some downward subsiding air of about 7-8 knots (700-800 feet per minute downdraft). At this point he determined that he would not make it to the destination airport and decided to divert to an auxiliary dirt landing strip to make a precautionary landing. The pilot did not make it all the way to the auxiliary strip and landed about 1.5 miles south, in rocky desert terrain. The pilot stated that the glider had no mechanical failures or malfunctions during the flight.
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
Pilot
- Certificate: private
- Ratings: rotorcraft: glider
- Flight time: 1,052 hours in all; 310 in this make and model; 49 in the last 90 days; 19 in the last 30 days
- Medical certificate: None
The aircraft
- Landing gear: fixed
- Engine:; 0 hours total
The flight
- Departed from: KP48 Peoria AZ
- Destination: KP48 Peoria AZ
- Flight plan: none
Weather at the time
- Light: daylight
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Other NTSB records under N15MM 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 LAX05CA161.