# NTSB DEN72FTE51: Cessna 421B, N989MC, Denver, CO, January 12, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 12, 1972
- Place: Denver, CO · DENVER, CO
- Location: 39.7392° N, 104.9847° W: Placed by OpenAirDocs: center of Denver, CO, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.7392&lon=-104.9847&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report September 6, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 164696
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN72FTE51
- Page: https://openairdocs.org/ntsb/DEN72FTE51-164696

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0039  72/1/12    DENVER,COLO         CESSNA 421B         CR-  0  0  1  NONCOMMERCIAL             AIRLINE TRANSPORT, AGE
        TIME - 1020                    N989MC              PX-  0  0  5  CORP/EXEC                 50, 12030 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            500 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - STAPLETON INTL
        DEPARTURE POINT             INTENDED DESTINATION
          TULSA,OKLA                  DENVER,COLO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GEAR RETRACTED                                           TAXI: FROM LANDING
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        REMARKS- UPPER FWD LUG,UPPER STRUT ASSY,P/N5141002-1 BROKE.ALSO LWR FWD LUG,BELLCRANK ASSY,P/N5041001-1.
```

## Aircraft

- Registration: N989MC (not matched to a registry record)
- Reported make and model: CESSNA 421B
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Stapleton Intl

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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