# NTSB LAX78FUJ09: Helio Acft H-295, N99PM, Scottsdale, AZ, November 8, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 8, 1977
- Place: Scottsdale, AZ · SCOTTSDALE, AZ
- Location: 33.5092° N, 111.8990° W: Placed by OpenAirDocs: center of Scottsdale, AZ, within about 8 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.5092&lon=-111.8990&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 12, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 144507
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX78FUJ09
- Page: https://openairdocs.org/ntsb/LAX78FUJ09

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3450   77/11/8   SCOTTSDALE,AZ       HELIO ACFT H-295    CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 48, 2240
        TIME - 1800                    N99PM               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 30 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SCOTTSDALE
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          EL PASO,TX                  SCOTTSDALE,AZ                CHANDLER,AZ
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: TRAFFIC PATTERN-CIRCLING
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - REDUCTION GEAR ASSEMBLY: GEARS,ACCESSORY DRIVE
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - IMPROPER LEVEL OFF
        FACTOR(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE,SPEED,AND ALTITUDE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FLOAT LNDG GEAR.CRANKSHAFT TIMING GEAR,WOODRUFF KEY PN STD-858,FAILED.
```

## Aircraft

- Registration: [N99PM](https://openairdocs.org/aircraft/N99PM), registered now, S/N 1208, built 1966 (OpenAirDocs)
- Reported make and model: HELIO ACFT H-295
- Registry model: [Helio H-295](https://openairdocs.org/model/helio-h-295) (registry code 4300802) (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: Scottsdale

## 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 19771108035159A](https://openairdocs.org/incident/19771108035159A), Nov 8, 1977: Helio H295, Scottsdale, AZ, Substantial damage. Float lndg gear. Crankshaft timing gear,woodruff key pn STD-858,failed.

## Other investigations on N99PM (3)

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 ERA11CA364](https://openairdocs.org/ntsb/ERA11CA364), Jun 25, 2011: Helio H-295 (N99PM), Brasstown, NC, substantial damage. Probable cause: The pilot's inadequate preflight planning, which resulted in a loss of engine power due to fuel exhaustion.
- [NTSB ERA09CA165](https://openairdocs.org/ntsb/ERA09CA165), Feb 9, 2009: Helio H-295 (N99PM), Clemson, SC, substantial damage. Probable cause: The pilot's failure to maintain directional control during landing. Contributing to the accident was the crosswind.
- [NTSB NYC7KFNA44](https://openairdocs.org/ntsb/NYC7KFNA44), May 23, 1975: Helio Acft H295 (N99PM), Forge Village, MA, 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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