Atlas / NTSB / LAX81DUJ31

NTSB CAROL · Event

Event LAX81DUJ31

1981-01-24 POSTON, Arizona, United States None 1 aircraft Status: Completed

Registry · N95485

FAA Aircraft Registry record.

Make / Model

SIKORSKY UH-19D

Year of manufacture

1955 · 26 years old at event

Engine

WRIGHT R-1300 SER (700 hp)

Seats / Engines

12 seats · 1 engine

Last airworthiness date

19790108

ADS-B equipped

Yes — Mode-S AD4711

Registrant of record

SIERRA AERONAUTICS LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N95485 Sikorsky S-55 None

Historical record (pre-1982)

NTSB recorded this accident in the pre-1982 coded-field schema — structured fields rather than free-text narrative. Decoded codes use established NTSB single-letter taxonomies; cause factors remain verbatim pending the Form 6120.4 codebook lookup.

Aircraft

SIKORSKY S-55 · N95485

Damage

Destroyed

Craft type

Balloon

Classification

Accident

Light condition

Dawn

Weather

VMC

Phase of flight

DH

Operator type

Part 135 (air taxi/commuter)

Kind of flying

CA

Weather at impact

Sky

CLEAR

Temp

74° F

Aircraft history

Serial number

0000055-3217

Total time

2,710 hrs

Pilot

Certificate

Commercial

Total hours

9,526

Age

45

Probable cause (from PRE1982.MDB)

N ASSY.

Investigator remarks

CON LINK ROD ON #4CYL ASSY NOT ATTACHED TO PISTO

Cause factors

74/C/AC C
POWERPLANT MASTER AND CONNECTING RODS Cause
88/C/BM C
MISCELLANEOUS ACTS,CONDITIONS DISCONNECTED Cause
88/K/CV K
MISCELLANEOUS ACTS,CONDITIONS VIBRATION,EXCESSIVE Joint factor

Decoded against the NTSB Form 6120.4 cause-factor codebook (ct_Pre1982 table). Each row shows the raw triplet, modifier (Cause / Factor / etc.), category, and specific code.

Source: NTSB pre-1982 historical archive. Docket 3 0880. Source file NTSB_1981_3_0880.txt. Modern CAROL record on data.ntsb.gov ↗.

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