# NTSB CHI77DEE16: Grumman AA5, N74406, Frankfort, IL, March 30, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 30, 1977
- Place: Frankfort, IL · FRANKFORT, IL
- Location: 41.5090° N, 87.8710° W: Placed by OpenAirDocs: center of Frankfort, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.5090&lon=-87.8710&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 8, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 152493
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77DEE16
- Page: https://openairdocs.org/ntsb/CHI77DEE16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3272  77/3/30    FRANKFORT IL        GRUMMAN AA5         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 32, 1290
        TIME - 1600                    N74406              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 35 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - FRANKFORT AIRPORT
        DEPARTURE POINT             INTENDED DESTINATION
          CHICAGO IL                  FRANKFORT IL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - EXERCISED POOR JUDGMENT
           WEATHER - UNFAVORABLE WIND CONDITIONS
        WEATHER BRIEFING - OTHER
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          NONE                                                     LEFT QUARTERING HEAD WIND 293-337 DEGREES
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          210                                                       35
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- PLT RPRTD WIND GUSTING 50K.WX BRIEF BY MDW TWR & ATIS.
```

## Aircraft

- Registration: [N74406](https://openairdocs.org/aircraft/N74406), registered now, S/N AA5B-0214, built 1975 (OpenAirDocs)
- Reported make and model: GRUMMAN AA5
- Registry model: [Grumman American Avn. AA-5B](https://openairdocs.org/model/grumman-american-avn-aa-5b) (registry code 3960105) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Frankfort Airport

## 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 19770330033899A](https://openairdocs.org/incident/19770330033899A), Mar 30, 1977: Grumav AA5B, Frankfort Il, IL, Substantial damage. Plt rprtd wind gusting 50K.wx brief by mdw twr & ATIS.

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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