LAX84FA415

NTSB accident investigation · de Havilland DHC-6-300 · Tau, Antarctica · July 21, 1984

Accident · FatalField investigationFinal report
Date
July 21, 1984, 13:40 local (17:40 UTC)
Place
Tau, Antarctica
Injuries
1 fatal, 7 serious, 8 minor; on the ground: 2 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N43SPde Havilland DHC-6-300
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840721039569A
Case key
23981

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionApproach - vfr pattern - base leg/base to final
Flt control syst,elevator control - corrodedCause
Flt control syst,elevator control - failure,totalCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The acft crash landed after the plt used flaps and power to semi-control pitch after the elevator down control cable failed at about 300 ft AGL on final approach. The left wing of the acft hit the terminal roof during the stall mush FROM50 ft AGL. The company is changing their acft control cables from steel to stainless steel to aid in the anti-corrosion and modifying their inspection period from 800 to 100 hours between inspections. The cable that separated failed from corrosion. No evidence of fatigue cracking or mechanical wear was found. Corrosion products were found within 2 inches of the serapation on both cable pieces.

Aircraft

Registration
N43SP
Reported as
de Havilland DHC-6-300
Category
Airplane
Serial number
669
Airframe hours
11,281
Engine
P&W PT6A-27, 620 horsepower, turbo prop
Damage
Substantial damage
Flight
Part 135
Operator
South Pacific Island
Registered owner
South Pacific Island
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · July 20, 1984 · 3 hours before
Departed
PPG · Pago Pago,Samoa, OF
Flight plan
VFR
Airport
HI36 · Tau, runway 36, 2,170 × 100 ft, dirt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
32
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,094 total · 1,020 in this make and model · 4,026 as pilot in command · 391 in the last 90 days · 117 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 8 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 70 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.