# NTSB MKC75FCD17: Ryan Navion, N91728, Monticello, IA, September 8, 1974

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: September 8, 1974
- Place: Monticello, IA · MONTICELLO, IA
- Location: 42.2304° N, 91.1859° W: Placed by OpenAirDocs: center of Monticello, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.2304&lon=-91.1859&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report November 19, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 138258
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC75FCD17
- Page: https://openairdocs.org/ntsb/MKC75FCD17

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3132   74/9/8    MONTICELLO,IOWA     RYAN NAVION         CR-  0  2  0  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1300                    N91728              PX-  0  0  0  DUAL                      AGE 43, 3000 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            15 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - MONTICELLO
        DEPARTURE POINT             INTENDED DESTINATION
          MONTICELLO,IOWA             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: CROP                                      LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           POWERPLANT - FUEL SYSTEM: PUMPS
           POWERPLANT - FUEL SYSTEM: LINES AND FITTINGS
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           TERRAIN - ROUGH/UNEVEN
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- INLET PUMP FITTING LEAKING IN THREAD AREA.FITTING APRD CROSS THREAD HVY AMT THREAD LUBE APLD.
```

## Aircraft

- Registration: [N91728](https://openairdocs.org/deregistered/N91728-1975-05-05), registration cancelled 1975-05-05, S/N NAV4186 (OpenAirDocs)
- Reported make and model: RYAN NAVION
- Registry model: [Ryan NAVION](https://openairdocs.org/model/ryan-navion) (registry code 6150160) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Monticello

## 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 19740908030449A](https://openairdocs.org/incident/19740908030449A), Sep 8, 1974: Navion NAVION*, Monticello, IA, Substantial damage. Inlet pump fitting leaking in thread area. Fitting aprd cross thread hvy amt thread lube apld.

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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