# Accident 19910731030772A: Gulstm 500B, Silica, KS, July 31, 1991

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 31, 1991, 07:59 local time
- Place: Silica, KS
- Damage: Destroyed
- Collision: Midair collision, second aircraft
- Phase of flight: Formation Flying
- Operating rules: Air taxi and commuter (Part 135)
- Operator: ZJWA
- Location: 38.3517° N, 98.4620° W: Placed by OpenAirDocs: center of Silica, KS, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.3517&lon=-98.4620&mi=10
- Aircraft: N904DF, a cancelled registration (https://openairdocs.org/deregistered/N904DF-1991-09-12) (OpenAirDocs)
- Registry model: Aero Commander 500-B (registry code 0141106, https://openairdocs.org/model/aero-commander-500-b) (OpenAirDocs)
- Reported make and model: GULSTM 500B
- Reported engine: LYC IO540E1A5
- People aboard: 1
- Fatal injuries: 1
- Pilot flight hours: 3,358 total, 724 in this make and model, 143 in the last 90 days
- NTSB investigation: [NTSB CHI91FA235](https://openairdocs.org/ntsb/CHI91FA235) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910731030772A

## Narrative

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

COLLIDED IN FLIGHT WITH COMPANY 500B W702CA. BOTH FELL TO GROUND. WERE OBSERVED FLYING FORMATION AND DOG FIGHTING.

## Other aircraft in the event

- N702CA, Gulstm 500B: [Accident 19910731030771A](https://openairdocs.org/incident/19910731030771A)

## 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 CHI91FA235](https://openairdocs.org/ntsb/CHI91FA235), Jul 31, 1991: Aero Commander 500B (N904DF), Silica, KS, destroyed, 2 fatal. Probable cause: THE FAILURE OF BOTH PILOTS TO MAINTAIN ADEQUATE SEPARATION DURING FORMATION FLIGHT. RELATED FACTORS ARE OVERCONFIDENCE IN PERSONAL ABILITY AND POOR PLANNING/DECISION.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.