Mcdonnell Douglas DC-9-32 accident near Dayton, Ohio, April 9, 1992
On April 9, 1992 at about 1:06 am local time, a Mcdonnell Douglas DC-9-32, registered N926L, suffered minor damage in an accident near Dayton, Ohio (Dayton Intl airport). It was a flight of an unrecorded kind under scheduled airline rules (Part 121). No one was hurt; 28 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
A FAILED WHEEL RIM FOLLOWING AN INADVERTENT OVER INFLATION BY THE MECHANIC. ADDITIONAL CAUSES WERE THE FAILURE OF THE MECHANIC TO BE AWARE OF THE PRESSURE BEING USED AND HIS FAILURE TO FOLLOW PROCEDURES. A FACTOR RELATED TO THE ACCIDENT WAS THE FAILURE OF THE COMPANY TO MAKE AVAILABLE LOW PRESSURE REGULATORS FOR THEIR MECHANICS DURING NORMAL WORK HOURS.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 9, 1992 · about 1:06 am local time
- Place
- Dayton, Ohio · Dayton Intl · map
- Type
- Accident
- Injuries
- No one was hurt; 28 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Mcdonnell Douglas DC-9-32 · all DC-9-32s on the register
- Registration
- N926L · registry record · serial 47172
- Damage
- Minor damage
- Flight
- Flight of an unrecorded kind · scheduled airline rules (Part 121)
The NTSB's narrative final · quoted from the NTSB record
THE LEFT SIDE NOSE WHEEL TIRE WAS DAMAGED DURING PUSHBACK, WHEN THE TOW BAR FAILED. THE TIRE WAS REPLACED AND WHILE BEING SERVICED ON THE AIRPLANE, THE TIRE RIM FAILED, FATALLY INJURING THE MECHANIC. EXAMINATION OF THE BOTTLE USED TO SERVICE THE TIRE SHOWED TWO PRESSURE SCALES, BARS ON THE OUTSIDE AND PSI ON THE INSIDE. ONE BAR EQUALS 14.7 PSI. THE HIGH END OF THE SCALE WAS 10,000 PSI AND THE BOTTLE WAS PRESSURIZED TO 4000 PSI. THE TIRE WAS TO BE SERVICED TO 150 PSI. A CHECK OF THE REGULATOR AFTER THE ACCIDENT DISCLOSED IT WAS PROPERLY CALIBRATED. ACCORDING TO THE FAA, THE TIRE RIM WAS STRESSED TO 580 PSI. EXAMINATION OF THE FRACTURE SURFACE FOUND, 'NO...MANUFACTURING OR MATERIAL DEFECTS...FRACTURE SURFACE IS CONSISTENT WITH A TENSILE OVERLOAD TYPE OF FAILURE.' ACCORDING TO THE COMPANY, NO LOW PRESSURE REGULATORS WERE AVAILABLE. THEY ARE KEPT UNDER LOCK WHEN NOT IN USE AND THE RESPONSIBLE PERSON HAD ALREADY GONE HOME FOR THE DAY.
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: airline transport pilot, commercial pilot
- Ratings: multi-engine land; single-engine land; instrument: airplane
- Flight time: 15,933 hours in all; 1,046 in this make and model; 121 in the last 90 days; 63 in the last 30 days; 1,500 as pilot in command
- Medical certificate: Class 1 (valid medical--no waivers/lim.)
- Seat: unk
The aircraft
- Last inspection: inspection type not recorded, January 2, 2000
- Maximum gross weight: 108,000 lb
- Seats: 105
- Landing gear: retractable
- Engine: P&W JT8D-9A (turbojet); 0 hours total
- Operator: Trans World Airlines
The flight
- Destination: STL St. Louis MO
- Flight plan: IFR
- Runway 0
- A second pilot was aboard
Weather at the time
- Light: night, bright
- Wind: from 260° at 6 knots
- Visibility: 7 statute miles
- Sky: broken clouds at 9,500 ft; scat at 5,500 ft
- Temperature: 61°F (16°C), dew point 54°F (12°C)
- Altimeter: 29.00 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 4 | |||
| Passengers | 24 |
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.
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.