Plane Crash List

Aerostar S-77A N3605T

24 November 1990 · Phoenix, Arizona, United States · Serious injuries

Summary

On 24 November 1990 at about 15:30 local time, a Aerostar S-77A registered N3605T was involved in an accident near Phoenix, Arizona, United States. 7 people were on board and 2 were seriously injured, 5 had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

The record

Date
at 15:30
Classification
Accident
Location
Phoenix, Arizona, United States
Coordinates
33.6798, -112.0901
Aircraft
Aerostar S-77A
Registration
N3605T
Category
Balloon
Operator
Not recorded
Operating rule
Part 91: General Aviation
Purpose of flight
Personal
Phase of flight
Not recorded
Aircraft damage
Substantial
Weather
VMC
Light
Day
NTSB number
LAX91LA038

People

2 people were seriously injured.

On board Died Serious Minor Uninjured
7 0 2 5 0

Probable cause

STRENGTH DEGRADATION OF THE KEVLAR SUSPENSION CABLES, DUE TO PREVIOUS HEAT DAMAGE. FACTORS RELATED TO THE ACCIDENT WERE: FAILURE OF THE QUICK RELEASE LINE TO RELEASE, AND SUSCEPTIBILITY OF KEVLAR SUSPENSION CABLES TO HEAT.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

WHILE BOARDING PSNL FOR A LAUNCH, THE BALLOON (BLN) WAS INFLATED & TETHERED TO A VEHICLE WITH A QUICK RELEASE LINE. WINDS AT THE TIME WERE ESTD TO BE ABT 7 KTS & SLIGHTLY GUSTY. DRG THE LAUNCH, THE PLT ADDED HEAT TO TAKEOFF & SIGNALED FOR A RELEASE, BUT THE QUICK RELEASE LINE FAILED TO RELEASE. THE BLN SETTLED TO THE GND & 'BOBBED' UP & DWN 2 TIMES. THE PLT RPRTD THAT AT THE HEIGHT OF A BOUNCE (ABT 6 TO 10 FT), ALL 28 OF THE ADVANCED FIBER TECHNOLOGY (AFT) KEVLAR SUSPENSION CABLES FAILED. THE BASKET FELL TO THE GND & THE ENVELOPE ROSE TO ABT 500 TO 700 FT, THOUGH THE RED LINE STAYED ATTACHED TO THE BASKET & OPENED THE DEFLATION PORT; 2 OF THE 7 OCCUPANTS RCVD SERIOUS INJURIES. AN EXAM REVEALED STRENGTH DEGRADATION OF THE KEVLAR CABLES DUE TO HEAT EXPOSURE. THE BLN HAD 240 HRS OF FLT TIME. STRENGTH LOSS WAS FND IN SOME AFT/KEVLAR CABLES OF OTHER BLNS. ON 11/28/90, AEROSTAR INTL SVC BULLETIN #129 WAS ISSUED TO RETROFIT ALL S-66A & S-77A BNS WITH STEEL CABLES.

Quoted verbatim from the NTSB record.

Other Aerostar S-77A accidents

Date Aircraft Location Operator Outcome Died
3 Jul 1995 Aerostar S-77A
N6317U
Davis, California, United States - Fatal 1
17 Feb 1996 Aerostar S-77A
N6317U
Tucson, Arizona, United States HOT Air Expeditions, Inc. Serious injuries -
14 Jul 2000 Aerostar S-77A
N5075H
River Falls, Wisconsin, United States - Serious injuries -
6 Aug 2000 Aerostar S-77A
N5164R
Steamboat Spgs, Colorado, United States - Serious injuries -
27 Jul 2002 Aerostar S-77A
N2867W
Custer, South Dakota, United States Scott E, Nash Serious injuries -
3 Jun 2003 Aerostar S-77A
N52461
Cottage Grove, Minnesota, United States - Serious injuries -

All 8 records for this type

Other accidents in this area

Date Aircraft Location Operator Outcome Died
24 Apr 1990 Piper PA-28-161
N2110D
Chandler, Arizona, United States Chandler Air Service No injuries -
26 Apr 1990 Cessna 120
N72576
Phoenix, Arizona, United States
no coordinates
James R. Ohlin No injuries -
7 Jun 1990 Bellanca 8KCAB
N50353
Phoenix, Arizona, United States Kindel, Charles E. Fatal 1
24 Oct 1990 Beechcraft F33A
N1568A
Mobile, Arizona, United States
no coordinates
- Minor injuries -
30 Apr 1990 Cessna 182L
N42748
Bullhead City, Arizona, United States
no coordinates
Unregistered No injuries -
1 May 1990 Piper PA30
N7946Y
Sedona, Arizona, United States Haaf, TOM No injuries -

All 170,864 records in United States