# NTSB investigations: American AA-1, MD

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB ERA15LA123](https://openairdocs.org/ntsb/ERA15LA123.md): American AA-1 · Fort Meade, MD · Accident · Serious injuries · Limited investigation · Final report · Feb 8, 2015 · N6116L · Substantial damage
  > The mechanic’s failure to detect the incorrect dry valve tappet clearances while troubleshooting ongoing engine issues, which resulted in partial loss of engine power during takeoff. Contributing to the partial loss of engine power was the mechanic's failure…
- [NTSB IAD77FIG17](https://openairdocs.org/ntsb/IAD77FIG17.md): Grum Amer AA1 · Darlington, MD · Accident · No injuries · Closed · May 8, 1977 · N5748L · Substantial damage
- [NTSB IAD76AI099](https://openairdocs.org/ntsb/IAD76AI099.md): Amer Avco AA1 · Frederick, MD · Accident · 1 fatal · Closed · Sep 12, 1976 · N6137L · Destroyed
- [NTSB IAD74FIG23](https://openairdocs.org/ntsb/IAD74FIG23.md): Amer Avco AA1 · Stevensville, MD · Accident · No injuries · Closed · Apr 21, 1974 · N1012G · Substantial damage
- [NTSB IAD74FIG01](https://openairdocs.org/ntsb/IAD74FIG01.md): Amer Avco AA1 · Stevensville, MD · Accident · Minor injuries · Closed · Jul 4, 1973 · N5787L · Substantial damage

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."eventStateOrRegion" = 'MD' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('0630610'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=0630610&state=MD

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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.