Atlas / NTSB / CHI77FEM22

NTSB CAROL · Event

Event CHI77FEM22

1977-04-11 EAST TAWAS, Michigan, United States Fatal 1 aircraft Status: Completed

Aircraft involved

N5706L AMER AVCO AA1 Fatal

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

AMER AVCO AA1 · N5706L

Damage

Destroyed

Craft type

Airplane

Classification

Accident

Light condition

Night

Weather

VMC

Phase of flight

Cruise — level (EA)

Operator type

D

Airport

IOSCO COUNTY

Kind of flying

B0

Weather at impact

Sky

BROKEN/LOWER SCATTERED

Wind

240° / 22 kt

Aircraft history

Serial number

000000000106

Total time

650 hrs

Pilot

Certificate

Commercial — instrument

Total hours

520

Age

24

Probable cause (from PRE1982.MDB)

WOULD NOT CAUSE ENG TO QUIT, JUST REDUCE PWR.

Investigator remarks

FUEL SEL VALUE #X670401 STUCK. POSITION OF VALUE

Cause factors

64/C/29 C
PILOT IN COMMAND INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING Cause
64/C/32 C
PILOT IN COMMAND MISMANAGEMENT OF FUEL Cause
88/C/63 C
MISCELLANEOUS ACTS,CONDITIONS FUEL EXHAUSTION Cause
64/L/01 L
PILOT IN COMMAND ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
74/L/CC L
POWERPLANT SELECTOR VALVES
88/L/CS L
MISCELLANEOUS ACTS,CONDITIONS STUCK
88/K/94 K
MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE Joint factor
83/K/K K
TERRAIN SANDY 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 0936. Source file NTSB_1977_3_0936.txt. Modern CAROL record on data.ntsb.gov ↗.

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