# NTSB DEN72FTC09: Helio H-395, N4198D, Jackson, WY, October 6, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 6, 1971
- Place: Jackson, WY · JACKSON, WY
- Location: 43.4719° N, 110.7753° W: Placed by OpenAirDocs: center of Jackson, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.4719&lon=-110.7753&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 18, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 164054
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN72FTC09
- Page: https://openairdocs.org/ntsb/DEN72FTC09

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4365   71/10/6   JACKSON,WYO         HELIO H-395         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 47, 2400
        TIME - 1855                    N4198D              PX-  0  0  0  BUSINESS                  TOTAL HOURS, 61 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - JACKSONS HOLE
        DEPARTURE POINT             INTENDED DESTINATION
          LAS VEGAS,NEV               JACKSON,WYO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            LANDING: FINAL APPROACH
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
        PROBABLE CAUSE(S)
           SYSTEMS - FLIGHT CONTROL SYSTEMS: WING FLAP CONTROL SYSTEM ELECTRICAL
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED
           MISCELLANEOUS ACTS,CONDITIONS - ASYMETRICAL FLAPS
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED MECHANICAL DISCREPANCY
                                  DIRECTIONAL CONTROL PROBLEM
        REMARKS- L FLAP FULL DWN,R FLAP 1/2 DUE ACTUATOR LOOSE AT MOUNT.PLT DIDNT ATTEMPT TO RETRACT FLAPS BFOR LDG
```

## Aircraft

- Registration: [N4198D](https://openairdocs.org/deregistered/N4198D-2019-01-16), registration cancelled 2019-01-16, S/N 592, built 1963 (OpenAirDocs)
- Reported make and model: HELIO H-395
- Registry model: [Helio H-395](https://openairdocs.org/model/helio-h-395) (registry code 4300202) (OpenAirDocs)
- Registry engine: [Lycoming GO-480 series](https://openairdocs.org/engine/lycoming-go-480-series) (registry code 41527, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Jacksons Hole

## Other investigations on N4198D (2)

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 ANC99LA095](https://openairdocs.org/ntsb/ANC99LA095), Jul 20, 1999: Helio H-395 (N4198D), Igiugig, AK, substantial damage. Probable cause: The pilot's inadequate compensation for wind conditions during the downwind to upwind taxi turn. Factors associated with this accident were the high crosswind, the pilot's improper use of flaps, and…
- [NTSB DEN73DTC26](https://openairdocs.org/ntsb/DEN73DTC26), May 25, 1973: Helio H-395 (N4198D), Jackson, WY, substantial 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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