Piper PA-28-140 accident near Big Spring, Texas, August 24, 1985
On August 24, 1985 at about 1:35 am local time, a Piper PA-28-140, registered N7401R, was destroyed in an accident near Big Spring, Texas (Big Spring airport). It was an instructional flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
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 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 24, 1985 · about 1:35 am local time
- Place
- Big Spring, Texas · Big Spring · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Piper PA-28-140 · all PA-28-140s on the register
- Registration
- N7401R · no longer on the register · serial 28-25002
- Damage
- Destroyed
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE ACFT COCKPIT/CABIN FILLED WITH SMOKE AFTER TAKEOFF. THE PLT & PASSG SMELLED AN ODOR OF ELECTRICAL WIRING BURNING AND SAW FIRE AT THE FIREWALL NEAR THE RUDDER PEDALS. THE ACFT WAS TURNED 180 DEGREES AND LANDED ON RWY 35. THE 2 OCCUPANTS IMMEDIATELY EGRESSED. INVESTIGATION SHOWED THAT THE ENG LEFT EXHAUST STACK, PN 63726-O2, WHICH SHOULD BE INSERTED INTO THE MUFFLER ASSEM, PN 66704-00 AND SECURED WITH CLAMP ASSEM, PN 65442-03 WAS DISPLACED AWAY FROM THE END OF THE MUFFLER ALLOWING HOT GASES TO BE DIRECTED ONTO THE FIREWALL IN THE AREA OF THE STARTER SOLENOID AND BRAKE RESERVOIR. THE SECURING CLAMP ASSEM WAS PRESENT ON THE MUFFLER WITH THE NUT INSTALLED AND CLAMP FLUSH WITH THE OUTSIDE DIAMETER OF THE MUFFLER EXTENSION. THE LOCATER PIN WAS EXTENDING THRU THE MUFFLER EXTENSION. THE EXHAUST STACK HAD THE LOCATOR HOLD AND INSPECTION DID NOT SHOW THAT THE PIN WAS WORN OR SHEARED TO ALLOW DISENGAGEMENT. FIRE DAMAGED THE ACFT FROM THE FIREWALL TO THE BAGGAGE/REAR AERA. FLUID FROM THE MELTED BRAKE RESERVOIR APPEARED TO ADD TO THE FIRE.
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: flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane single-engine; instrument: airplane
- Flight time: 2,380 hours in all; 49 in this make and model
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: rgt
The aircraft
- Airframe total time: 4,017 hours
- Last inspection: annual inspection, June 16, 1985; 25 hours since
- Maximum gross weight: 1,950 lb
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming O-320-E2A (piston); 0 hours total
- Fire in flight and on the ground
The flight
- Destination: E02 Odessa TX
- Flight plan: none
- Runway 35, 8,800 ft by 150 ft
Weather at the time
- Light: daylight
- Visibility: 20 statute miles
- Sky: scat
- Temperature: 84°F (29°C), dew point 59°F (15°C)
- Altimeter: 30.00 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 2 |
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.