# NTSB MIA90LA084: Grumman American AA-1B, N1492R, San Juan, PR, March 7, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 7, 1990, 08:10 local (12:10 UTC)
- Place: San Juan, PR
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 21, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32635
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA084
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32635/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA084

## Probable cause

FAILURE OF THE STUDENT PILOT TO MAINTAIN DIRECTIONAL CONTROL OF THE AIRCRAFT WHILE TAXIING.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- On ground/water collision with object, taxi - to takeoff

## Analysis

WHILE TAXIING ON THE RAMP TO TAKEOFF, THE STUDENT PLT LOST CONTROL OF THE ACFT. IT COLLIDED WITH A PARKED UNOCCUPIED ACFT & CAME TO REST. THE STUDENT'S INSTRUCTOR STATED THAT SHE WAS PREOCCUPIED WITH AN EVENT WHICH HAD TAKEN PLACE THE PREVIOUS DAY. THERE WAS NO EVIDENCE OF FAILURE OR MALFUNCTION OF THE BRAKES.

## Aircraft

- Registration: [N1492R](https://openairdocs.org/aircraft/N1492R), registered now, S/N AA1B-0592 (OpenAirDocs)
- Reported make and model: Grumman American AA-1B
- Registry model: [Grumman American Avn. AA-1B](https://openairdocs.org/model/grumman-american-avn-aa-1b) (registry code 3960103) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: AA1B-0592
- Engines: LYCOMING O-235-C2C 108 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Universal Aviation
- Registered owner: Unknown
- Airport: SIG, Isla Grande

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; student; medical: class 3, valid medical--w/ waivers/lim; flight hours: 109 total, 70 in this make and model, 2 as pilot in command, 20 in the last 90 days, 8 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F
- Observed at: SJU, 6 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19900307003669A](https://openairdocs.org/incident/19900307003669A), Mar 7, 1990: Gulstm AA1B, San Juan, Puerto Rico, Substantial damage. Collided with a parked aircraft while taxiing for takeoff.

## Other investigations on N1492R (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 MIA77DKA02](https://openairdocs.org/ntsb/MIA77DKA02), Nov 9, 1976: Grum Amer AA-1B (N1492R), Manati, PR, substantial damage

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.

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