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Accidents · NTSB MKC87LA143 · Preliminary: the investigation is not finished

Schweizer G-164A accident near Lilbourn, Missouri, July 21, 1987

On July 21, 1987, a Schweizer G-164A, registered N8911H, was destroyed in an accident near Lilbourn, Missouri. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). No one was hurt; 1 person was 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
July 21, 1987
Place
Lilbourn, Missouri · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Schweizer G-164A
Registration
N8911H · no longer on the register · serial 1611
Damage
Destroyed
Flight
Aerial application (crop spraying) flight · agricultural flying rules (Part 137)

The NTSB's narrative final · quoted from the NTSB record

WHILE RETURNING FROM AN AERIAL APPLICATION FLIGHT, THE AIRCRAFT'S ENGINE LOST POWER AND QUIT. THE PILOT MADE A FORCED LANDING IN A SOFT FIELD AND NOSED OVER. POST ACCIDENT INSPECTION REVEALED A CYLINDER WAS CRACKED. SEVERAL HOURS AFTER THE ACCIDENT, THE UNATTENDED AIRCRAFT CAUGHT FIRE AND WAS DESTROYED.

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: commercial pilot
  • Ratings: single-engine land
  • Flight time: 3,269 hours in all; 1,890 in this make and model; 163 in the last 90 days; 77 in the last 30 days; 3,269 as pilot in command
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: ctr

The aircraft

  • Last inspection: annual inspection
  • Maximum gross weight: 4,500 lb
  • Seats: 1
  • Landing gear: fixed
  • Engine: P&W R-1340-AN1 (piston); 0 hours total
  • Fire on the ground

The flight

  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: dusk
  • Wind: from 180° at 6 knots
  • Visibility: 7 statute miles
  • Sky: clear
  • Temperature: 93°F (34°C), dew point 0°F (-18°C)
  • Altimeter: 29.00 inHg

Injuries

FatalSeriousMinorNone
Crew1

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.