# NTSB MKC73IK072: Convair 580, N968N, Minneapolis, MN, May 31, 1973

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: May 31, 1973
- Place: Minneapolis, MN · MINNEAPOLIS, MN
- Location: 44.9800° N, 93.2638° W: Placed by OpenAirDocs: center of Minneapolis, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.9800&lon=-93.2638&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 52 uninjured
- Status: Completed, report September 11, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 189843
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC73IK072
- Page: https://openairdocs.org/ntsb/MKC73IK072

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0017  73/5/31    MINNEAPOLIS,MINN    CONVAIR 580         CR-  0  0  3  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1707                    N968N               PX-  0  0 49                            UNK/NR, 13309 TOTAL
                                       DAMAGE-MINOR        OT-  0  0  0                            HOURS, 1057 IN TYPE,
                                                                                                   INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - MINNEAPOLIS-ST.PA
        OPERATOR - NORTH CENTRAL AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          WATERTOWN,S DAK             MINNEAPOLIS,MINN
        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 - CHAFED
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           AIRFRAME - LANDING GEAR: EMERGENCY/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - PRESSURE TOO LOW
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           MISCELLANEOUS ACTS,CONDITIONS - INTENTIONAL WHEELS-UP
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - LANDED ON FOAMED RUNWAY
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- R GR WOULDNT EXTEND.UPLATCH CABLE FAILED AT PULLEY.GR EMER SYS INOP DUE LEAKS & STICKY UPLATCH CYL
```

## Aircraft

- Registration: [N968N](https://openairdocs.org/deregistered/N968N-2007-04-11), registration cancelled 2007-04-11, S/N 462, built 1957 (OpenAirDocs)
- Reported make and model: CONVAIR 580
- Registry model: [Convair 440](https://openairdocs.org/model/convair-440) (registry code 2422902) (OpenAirDocs)
- Registry engine: [Allison 501-D13 series](https://openairdocs.org/engine/allison-501-d13-series) (registry code 03004, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Engines: turbo prop
- Damage: Minor damage
- Airport: Minneapolis-St.Pa

## Other investigations on N968N (1)

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.

- [NTSB CHI70IC047](https://openairdocs.org/ntsb/CHI70IC047), Feb 1, 1970: Convair 580 (N968N), Houghton, MI, incident, minor damage

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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