# NTSB LAX82FVG11: Grum Amer AA-1B, N1632R, Vacaville, CA, December 22, 1981

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: December 22, 1981
- Place: Vacaville, CA · VACAVILLE, CA
- Location: 38.3586° N, 121.9686° W: Placed by OpenAirDocs: center of Vacaville, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.3586&lon=-121.9686&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor, 1 uninjured
- Status: Completed, report April 12, 1982
- Report: Brief approved by the director
- NTSB case key (mKey): 122687
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX82FVG11
- Page: https://openairdocs.org/ntsb/LAX82FVG11

## NTSB brief (aircraft 2)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3549  81/12/22   VACAVILLE,CA        PIPER PA-28R        CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1000                    N4461T              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  AGE 37, 1192 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  1                            878 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - NUT TREE
        DEPARTURE POINT             INTENDED DESTINATION
          VACAVILLE,CA                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - NO CONTROL                          RADAR CTL/SURVEILLANCE - NOT UNDER RADAR CONTACT
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - UNCONTROLLED AIRPORT
          CONTROL ZONE/AREA - NO                                   EVASIVE ACTION TAKEN - YES
          ANTI-COLLISION LIGHTS - INSTALLED,OPERATION UNKNOWN
        REMARKS- FLEW LARGER PAT THAN OTR PLT.WHILE ON FINAL APCH,COLLIDED W OTR ACFT.OTR ACFT TURNING FINAL.
```

## NTSB brief (aircraft 1)

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3549  81/12/22   VACAVILLE,CA        GRUM AMER AA-1B     CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 24, 448
        TIME - 1000                    N1632R              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 10 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  2                            INSTRUMENT RATED.
        NAME OF AIRPORT - NUT TREE
        DEPARTURE POINT             INTENDED DESTINATION
          CONCORD,CA                  VACAVILLE,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH AIRCRAFT: BOTH IN FLIGHT                  LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OTHER AIRCRAFT
           PERSONNEL - MISCELLANEOUS-PERSONNEL: PILOT OF OTHER AIRCRAFT
         SPECIAL DATA
          SEGMENTS OF AVIATION INVOLVED - SMALL US GEN.AV.-SMALL US GEN.AV.
          CONTROLLING AGENCY - NO CONTROL                          RADAR CTL/SURVEILLANCE - NOT UNDER RADAR CONTACT
          TRAFFIC ADVISORY ISSUED - NONE                           CONTROLLED/UNCONTROLLED AIRPORT - UNCONTROLLED AIRPORT
          CONTROL ZONE/AREA - NO                                   EVASIVE ACTION TAKEN - NO
          ANTI-COLLISION LIGHTS - INSTALLED,OPERATION UNKNOWN
        REMARKS- FLEW SMALLER PATTERN THAN OTR PLT,CONVERGED ON OTR ACFT FM ABOVE & LEFT DRG TURN TO FINAL.
```

## Aircraft 1

- Registration: [N1632R](https://openairdocs.org/aircraft/N1632R), registered now, S/N AA1B-0632, built 1976 (OpenAirDocs)
- Reported make and model: GRUM AMER 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
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Nut Tree

## Aircraft 2

- Registration: [N4461T](https://openairdocs.org/aircraft/N4461T), registered now, S/N 28R-7235058, built 1972 (OpenAirDocs)
- Reported make and model: PIPER PA-28R
- Registry model: [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200) (registry code 7102811) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Nut Tree

## FAA reports on this event (2)

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

- [Accident 19811222081231A](https://openairdocs.org/incident/19811222081231A), Dec 22, 1981: Grumav AA1B, Vacaville, CA, Substantial damage. Grumman aircraft collided with Piper, N4461T, as it turned on final approach for landing.
- [Accident 19811222081222A](https://openairdocs.org/incident/19811222081222A), Dec 22, 1981: Piper PA28R200, Vacaville, CA, Substantial damage. Piper aircraft was on final approach for landing when Grumman turned final and collision occurred. Other n#1632R.

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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