FTW84LA314

NTSB accident investigation · Aerospatiale AS-355F · El Paso, TX · July 20, 1984

Accident · No injuriesLimited investigationFinal report
Date
July 19, 1984, 19:23 local (Jul 20, 1984, 01:23 UTC)
Place
El Paso, TX
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N240USAerospatiale AS-355F
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840719036519A
Case key
21400

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

On this page

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.

In flight encounter with weatherManeuvering
Weather condition - turbulence(thunderstorms)Factor
Weather evaluation - inaccuratePilot in commandCause
Lack of total experience in type of aircraftPilot in commandFactor
Weather condition - downdraftFactor
Compensation for wind conditions - inadequatePilot in commandCause
Collective - delayedPilot in commandCause
Cyclic - excessivePilot in commandCause
Throttle/power control - improper use ofPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Roll overDescent - uncontrolled

Analysis

The helicopter encountered turbulence and downdrafts during landing. The acft impacted the asphalt ramp slightly nose low and bounced 2-3 ft into the air. The nose dipped more and full aft cyclic was applied. The main rotor blades hit the ground and the acft yawed and rolled over to the right. The acft was destroyed by fire. The plt stated that he experienced turbulence and as he turned toward the ramp to land the acft began a rapid descent from 50 ft AGL. A little collective was added but the acft did not respond. The plt turned fast into the wind and added full up collective. The descent continued to impact.

Aircraft

Registration
N240US
Reported as
Aerospatiale AS-355F
Category
Helicopter
Serial number
5121
Airframe hours
362
Engine
Allison 250 C-20F, 420 horsepower, turbo shaft
Damage
Substantial damage
Fire
On-Ground
Flight
Ferry · Part 91
Registered owner
Air Logistics Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · July 16, 1984 · 5 hours before
Departed
PEQ · Pecos, TX
Airport
El Paso International

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
39
Certificates
Flight instructor, Commercial, Airline transport
Airplane ratings
Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
7,463 total · 13 in this make and model · 7,427 as pilot in command · 100 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 9 knots, gusting 18
Visibility
30 statute miles
Lowest ceiling
6,000 ft broken
Temperature
81 °F, dew point 55 °F
Altimeter
30.00 inHg
Observed at
ELP

FAA reports on this event · 1

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