# NTSB IAD78IA054: Gruman AA5, N9533L, Raleigh, NC, March 25, 1978

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: March 25, 1978
- Place: Raleigh, NC · RALEIGH, NC
- Location: 35.7721° N, 78.6386° W: Placed by OpenAirDocs: center of Raleigh, NC, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.7721&lon=-78.6386&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report April 11, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 141611
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD78IA054
- Page: https://openairdocs.org/ntsb/IAD78IA054

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
5-0003  78/3/25    RALEIGH,NC          GRUMAN AA5          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 43, 298
        TIME - 1100                    N9533L              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 65 IN TYPE,
                                       DAMAGE-NONE         OT-  0  0  0                            INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        DEPARTURE POINT             INTENDED DESTINATION
          RALEIGH,NC                  MILLVILLE,NJ
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           AIRFRAME - FLIGHT CONTROL SURFACES: AILERON SURFACES,ATTACHMENTS
           MISCELLANEOUS ACTS,CONDITIONS - FLUTTER
        FACTOR(S)
           WEATHER - RAIN
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  1900
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     RAIN
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          FOG                                                      IFR
        TYPE OF FLIGHT PLAN
          IFR
        REMARKS- AILERON FLUTTER.3 OTHER PLTS FLYING SIMILAR MODELS EXPERIENCED FLUTTER WHEN FLYING IN RAIN.
```

## Aircraft

- Registration: [N9533L](https://openairdocs.org/deregistered/N9533L-2013-05-23), registration cancelled 2013-05-23, S/N AA5-0615, built 1974 (OpenAirDocs)
- Reported make and model: GRUMAN AA5
- Registry model: [Grumman American Avn. AA-5](https://openairdocs.org/model/grumman-american-avn-aa-5) (registry code 3960104) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: No damage

## FAA reports on this event (1)

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

- [Incident 19780325010309I](https://openairdocs.org/incident/19780325010309I), Mar 25, 1978: Gulstm AA5, Raleigh, NC. Aileron flutter only when flying in rain, especially in climb. Cable tension, control travel, balance off slightly.

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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