# Accident 19990830047159A: Cessna A188B, Seminole, TX, August 30, 1999

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 30, 1999, 18:45 local time
- Place: Seminole, TX
- Airport: Hamilton Aircraft Inc Airport
- Damage: Substantial damage
- Phase of flight: Roll-Out (Fixed Wing)
- Operating rules: Agricultural (Part 137)
- Operator: ADGG
- Location: 32.7093° N, 102.6496° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=32.7093&lon=-102.6496&mi=10
- Aircraft: N731JY, a cancelled registration (https://openairdocs.org/deregistered/N731JY-2000-06-26) (OpenAirDocs)
- Registry model: Cessna A188B (registry code 2073005, https://openairdocs.org/model/cessna-a188b) (OpenAirDocs)
- Reported make and model: CESSNA A188B
- Reported engine: CONT IO520D
- Fatal injuries: 0
- Pilot flight hours: 4,200 total, 400 in this make and model, 200 in the last 90 days
- NTSB investigation: [NTSB FTW99LA244](https://openairdocs.org/ntsb/FTW99LA244) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19990830047159A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(.4)DURING THE LANDING ROLL, THE AGRICULTURAL AIRPLANE DEPARTED THE RIGHT SIDE OF THE RUNWAY, ROLLED INTO SOFT TERRAIN, AND SUBSEQUENTLY NOSED OVER TO THE INVERTED POSITION. THE PILOT REPORTED THAT DURING THE LANDING ROLL, HIS SEAT BECAME DISLODGED FROM THE SEAT TRACK.  HE FURTHER REPORTED THAT SINCE HIS LEFT LEG IS SHORTER THAN HIS RIGHT LEG, WHEN THE SEAT SLID ALL THE WAY BACK, IT CAUSED HIS LEFT FOOT TO LOSE CONTACT WITH THE RUDDER PEDAL.  EXAMINATION OF THE SEAT BY AN FAA INSPECTOR REVEALED THAT THE FORWARD LEFT SEAT ROLLER HOUSING ASSEMBLY HAD SPREAD OPEN TO NEAR THE WIDTH OF THE SEAT RAIL, ALLOWING THE SEAT TO DISLODGE FROM THE LOCKED POSITION.  ACCORDING TO THE INSPECTOR, THE AIRPLANE'S MAINTENANCE RECORDS INDICATED THAT AD 87-20-03 R2 (TO ASSURE PROPER ENGAGEMENT OF THE SEAT LOCKING MECHANISM AND TO PRECLUDE INADVERTENT SEAT SLIPPAGE) HAD BEEN COMPLIED WITH AT THE LAST ANNUAL INSPECTION.  HOWEVER, THE INSPECTOR STATED THAT THE AD HAD NOT BEEN PROPERLY ACCOMPLISHED, SINCE HIS EXAMINATION OF THE SEAT REVEALED THAT IT DID NOT MEET THE LOCKING PIN ENGAGEMENT REQUIREMENTS OF THE AD.  TIME SINCE THE LAST ANNUAL INSPECTION WAS 249.4 HOURS.                                          (-23)ON AUGUST 30, 1999 THIS COMMERICAL PILOT LOST DIRECTIONAL CONTROL OF HIS AGRICULTURAL AIRCRAFT DURING THE LANDING SEQUENCE WHEN THE PILOT SEAT BECAME DISLODGED FROM THE SEAT TRACK AND SLID ALL THE WAY BACK CAUSING THE PILOTS LEFT FOOT TO LOOSE CONTACT WITH THE RUDDER PEDAL. THE PILOT HAD POLIO AND HIS LEFT LEG IS SHORTER THAN THE RIGHT.  THE AIRCRAFT LEFT THE RUNWAY TO THE RIGHT AND ROLLED A SHORT DISTANCE IN THE SOFT SAND BEFORE FLIPPING OVER ON IT'S BACK CAUSING SUBSTANTIAL DAMAGE.  DURING THE FLIP OVER THE SEAT CAME OFF OF THE SEAT TRACK COMPLETELY.  THE PILOT SUFFERED A CRACKED VERTEBRA AND MULTIPLE CONCUSSIONS.  VFR CONDITIONS PREVAILED FOR THIS 14 CFR PART 137 FLIGHT.  POST ACCIDENT INVESTIGATION REVEALED THAT THE PART NUMBER 0700645-1 HOUSING ASSEMBLY-SEAT ROLLER FWD LH HAD SPREAD OPEN TO NEAR THE WIDTH OF THE SEAT RAIL ALLOWING THE SEAT TO DISLODGE FROM THE LOCKED POSITION.  THIS INVESTIGATION IS OVER.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB FTW99LA244](https://openairdocs.org/ntsb/FTW99LA244), Aug 30, 1999: Cessna A188B (N731JY), Seminole, TX, substantial damage. Probable cause: The pilot seat disengaging from the seat track resulting from inadequate AD compliance during the last annual inspection. A factor was the soft terrain.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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