# NTSB DEN68A0017: Convair 580, N73145, Denver, CO, September 8, 1967

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 8, 1967
- 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: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 14 uninjured
- Status: Completed, report October 17, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 114862
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN68A0017
- Page: https://openairdocs.org/ntsb/DEN68A0017

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0031   67/9/8    DENVER,COLO         CONVAIR 580         CR-  0  0  3  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1016                    N73145              PX-  0  0 11                            36, 9406 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            1784 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - STAPLETON INTL
        OPERATOR - FRONTIER AIRLINES,INC.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: GEAR LOCKING MECHANISM
           AIRFRAME - LANDING GEAR: EMERGENCY/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - LANDED ON FOAMED RUNWAY
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- R.LNDG GR UPLATCH RELEASE CABLE,R.LNDG GR EMER.AIR OPER.UPLATCH RELEASE ASSY. IMPROPERLY INSTALLED
```

## Aircraft

- Registration: [N73145](https://openairdocs.org/deregistered/N73145-1992-08-12), registration cancelled 1992-08-12, S/N 145 (OpenAirDocs)
- Reported make and model: CONVAIR 580
- Registry model: [Convair 340-31](https://openairdocs.org/model/convair-340-31) (registry code 2422804) (OpenAirDocs)
- Category: Airplane
- Engines: turbo prop
- Damage: Substantial damage
- Airport: Stapleton Intl

## Other investigations on N73145 (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 DEN74AD033](https://openairdocs.org/ntsb/DEN74AD033), Jan 13, 1974: Convair 580 (N73145), Cheyenne, WY, no 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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.