# Accident 20180723017709A: Grumman American Avn. Corp. AA-5B, Brazoria, TX, July 23, 2018

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 23, 2018, 12:15 local time
- Place: Brazoria, TX
- Damage: Substantial damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 28.9847° N, 95.5392° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=28.9847&lon=-95.5392&mi=10
- Aircraft: N74420, a cancelled registration (https://openairdocs.org/deregistered/N74420-2021-10-30) (OpenAirDocs)
- Registry model: Grumman American Avn. AA-5B (registry code 3960105, https://openairdocs.org/model/grumman-american-avn-aa-5b) (OpenAirDocs)
- Registry engine: Lycoming O&VO-360 series (registry code 41514, https://openairdocs.org/engine/lycoming-o-vo-360-series) (OpenAirDocs)
- Reported make and model: GRUMMAN AMERICAN AVN. CORP. AA-5B
- Reported engine: LYCOMING O&VO-360 SER
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 0
- NTSB investigation: [NTSB CEN18LA292](https://openairdocs.org/ntsb/CEN18LA292) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20180723017709A

## Narrative

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

DURING AN INSTRUMENT TRAINING FLIGHT AIRCRAFT STARTED TO SHAKE VIOLENTLY. PILOT PULLED THE THROTTLE OUT TO IDLE AND NOTICED A MISSING PROPELLER BLADE. AIRCRAFT WAS LANDED IN AN OPEN FIELD. NO INJURIES BUT MOST OF THE ENGINE MOUNTS WERE BROKEN. NTSB RULED IT AN ACCIDENT.

## 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 CEN18LA292](https://openairdocs.org/ntsb/CEN18LA292), Jul 23, 2018: Grumman AA5 (N74420), Brazoria, TX, substantial damage. Probable cause: The propeller blade separation due to a fatigue fracture.

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.