# NTSB CHI77FEV21: Rockwell 500B, N90540, Mt.Vernon, IL, April 14, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 14, 1977
- Place: Mt.Vernon, IL · MT.VERNON, IL
- Location: 38.3142° N, 88.9175° W: Placed by OpenAirDocs: center of Mount Vernon, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.3142&lon=-88.9175&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 13, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 157593
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77FEV21
- Page: https://openairdocs.org/ntsb/CHI77FEV21

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0550  77/4/14    MT.VERNON,IL        ROCKWELL 500B       CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 59, 2204
        TIME - 1855                    N90540              PX-  0  0  1  BUSINESS                  TOTAL HOURS, 126 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - MT.VERNON-OUTLAND
        DEPARTURE POINT             INTENDED DESTINATION
          ATLATA,GA                   MT.VERNON,IL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           AIRFRAME - LANDING GEAR: EMERGENCY/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - PRESSURE,NONE
        REMARKS- LEFT MAIN GEAR ACTUATING CLEVIS, P/N ED 12526, BROKEN.
```

## Aircraft

- Registration: N90540 (not matched to a registry record)
- Reported make and model: ROCKWELL 500B
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Mt.Vernon-Outland

## 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 19770414007959A](https://openairdocs.org/incident/19770414007959A), Apr 14, 1977: Rkwell 500B, Mt.Vernon, IL, Substantial damage. Left main gear actuating clevis, p/n ed 12526, broken.

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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