# NTSB CHI81IA021: Beech 99, N312BA, Chicago, IL, January 17, 1981

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: January 17, 1981
- Place: Chicago, IL · CHICAGO, IL
- Location: 41.8500° N, 87.6501° W: Placed by OpenAirDocs: center of Chicago, IL, within about 9 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.8500&lon=-87.6501&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 14 uninjured
- Status: Completed, report February 15, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 126603
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI81IA021
- Page: https://openairdocs.org/ntsb/CHI81IA021

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
5-0033  81/1/17    CHICAGO,IL          BEECH 99            CR-  0  0  2  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1621                    N312BA              PX-  0  0 12  SCHED PASSG SRV           53, 16082 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0  0                            5993 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - CHICAGO O'HARE
        DEPARTURE POINT             INTENDED DESTINATION
          DANVILLE,IL                 CHICAGO,IL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE INSPECTION OF AIRCRAFT (MAINTENANCE PERSONNEL)
           AIRFRAME - LANDING GEAR: WHEELS,TIRES,AXLES
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        REMARKS- WHEEL FRACTURED AT SCRIBE MARK AT VALVE STEM.UN EXTEND L GR.
```

## Aircraft

- Registration: N312BA (not matched to a registry record)
- Reported make and model: BEECH 99
- Category: Airplane
- Engines: turbo prop
- Damage: Minor damage
- Airport: Chicago O'Hare

## 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 19810117009039I](https://openairdocs.org/incident/19810117009039I), Jan 17, 1981: Beech 99, Chicago, IL, Minor damage. Unable to lower left main gear due to fractured wheel. Landed okay with left gear up.

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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