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SEA78FYE11

1978-03-06 · MONTESANO, Washington, United States · None · 1 aircraft · Status: Completed

Current FAA registration · N100LM

Make / Model
HILLER UH-12E
Engine
ALLISON 250-C20 SER (420 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19910108
ADS-B equipped
Yes — Mode-S A005BA

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Historical record (pre-1982 coded fields)

Aircraft
HILLER ACFT UH-12E · N100LM
Damage
Substantial
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
DC
Operator type
Public use
Kind of flying
CY

Weather at impact

Sky
CLEAR
Wind
225° / 8 kt
Temp
60° F

Aircraft history

Serial number
000000001583
Total time
2,188 hrs

Pilot

Certificate
Commercial
Total hours
2,925
Age
36

Probable cause (from PRE1982.MDB)

FAILED. LND ON HILL SIDE.

Investigator remarks

CARRYING CEDAR BLOCKS. 2ND STAGE REDUCTION GEAR

Cause factors

  • 78/C/BI C
    ROTORCRAFT MAIN ROTOR INTERMEDIATE GEARS Cause
  • 88/C/95 C
    MISCELLANEOUS ACTS,CONDITIONS MATERIAL FAILURE Cause
  • 83/K/F K
    TERRAIN ROUGH/UNEVEN Joint factor
  • 88/L/24 L
    MISCELLANEOUS ACTS,CONDITIONS JETTISONED LOAD

Decoded against the NTSB Form 6120.4 cause-factor codebook (ct_Pre1982 table).

Source: NTSB pre-1982 historical archive. Docket 3 0555. Source file NTSB_1978_3_0555.txt. Modern CAROL record on data.ntsb.gov ↗.

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