# Accident 19740820027799A: Grumav AA1B, Laytonsville, MD, August 20, 1974

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 20, 1974
- Place: Laytonsville, MD
- Airport: Butts Farm
- Damage: Substantial damage
- Phase of flight: To Init Climb(1st Pwr Reduct)
- Location: 39.2089° N, 77.1353° W: Placed by OpenAirDocs: center of Laytonsville, MD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2089&lon=-77.1353&mi=10
- Aircraft: N9946L, a cancelled registration (https://openairdocs.org/deregistered/N9946L-1975-06-11) (OpenAirDocs)
- Registry model: Grumman American Avn. AA-1B (registry code 3960103, https://openairdocs.org/model/grumman-american-avn-aa-1b) (OpenAirDocs)
- Reported make and model: GRUMAV AA1B
- People aboard: 1
- Fatal injuries: 1
- Pilot flight hours: 246 total, 14 in this make and model, 2 in the last 90 days
- NTSB investigation: [NTSB IAD75FIG03](https://openairdocs.org/ntsb/IAD75FIG03) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19740820027799A

## Narrative

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

ACFT ABT 15LB OVR G/W.OWNERS MANUAL-HARD SFC 1915FT TO CLR 50FT OBSTACLE.TREE 2040FT FM PT OF DEP.

## 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 IAD75FIG03](https://openairdocs.org/ntsb/IAD75FIG03), Aug 20, 1974: Amer Avco AA1-B (N9946L), Laytonsville, MD, substantial damage, 1 fatal

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.