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Atlas / NTSB / NYC81IA048

NTSB CAROL · Event

Event NYC81IA048

1981-05-12 UNITY, Maine, United States None 1 aircraft Status: Completed

Aircraft involved

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

DEHAVILLAND DHC-6 · N386EX

Damage

Minor

Craft type

Airplane

Classification

C

Light condition

Dawn

Weather

IMC

Phase of flight

D0

Weather at impact

Sky

OVERCAST

Wind

160° / 10 kt

Temp

50° F

Aircraft history

Serial number

000000000248

Total time

26,886 hrs

Pilot

Certificate

DA (DA)

Total hours

7,041

Age

30

Probable cause (from PRE1982.MDB)

G,EL TORQUE TUBE BLT,AN175-27A,FAILED FM FATIGUE.

Investigator remarks

SVR VIB,LOST EL CTL/TRIM.TRIM TAB BLT,AN23-15,MS

Cause factors

  • 70/A/D0 A
    AIRFRAME ELEVATOR ASSEMBLY,ATTACHMENTS Cause — pilot/personnel action
  • 88/A/90 A
    MISCELLANEOUS ACTS,CONDITIONS MISSING Cause — pilot/personnel action
  • 88/A/CV A
    MISCELLANEOUS ACTS,CONDITIONS VIBRATION,EXCESSIVE Cause — pilot/personnel action
  • 88/A/36 A
    MISCELLANEOUS ACTS,CONDITIONS FATIGUE FRACTURE Cause — pilot/personnel action

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 4 0015. Source file NTSB_1981_4_0015.txt. Modern CAROL record on data.ntsb.gov ↗.