SEA93LA017

NTSB accident investigation · Raven AX-9 · Green River, UT · November 2, 1992

Accident · Serious injuriesLimited investigationFinal report
Date
November 2, 1992, 09:00 local (16:00 UTC)
Place
Green River, UT
Injuries
4 serious, 1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N57139Raven AX-9
Weather
Visual (VMC) · Day
Status
Completed · report September 14, 1993
Report
Approved by Office Director
FAA report
19921102045559A
Case key
42959

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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Probable cause

The inadequate preflt planning/preparation by the pilot resulting in inflt encounter with weather and his failure to maintain proper rate of descent during an emergency forced landing. A factor relating to the accident was the turbulent weather conditions.

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 weatherClimb
Weather condition - turbulenceFactor
Preflight planning/preparation - inadequatePilot in commandCause
Forced landingDescent - emergency
Hard landingLanding - flare/touchdown
Proper descent rate - not maintainedPilot in commandCause

Analysis

The pilot took off from a remote site without obtaining a weather briefing, encountered fcst turb during the initial climb, which pitched the balloon into an unusual attitude and partially deflated the envelope. The pilot initiated an emergency forced landing, activated the deflation line at 40 ft. AGL, and the basket impacted the ground at 400 to 600 fpm. An advisory was in effect for ocnl MDT to isold svr turb.

Aircraft

Registration
N57139
Reported as
Raven AX-9
Category
Balloon
Serial number
S66A-111
Airframe hours
588
Engine
unknown
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Markle, John R.
Registered owner
Sunset Balloon Flights, Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 17, 1992 · 14 hours before

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
Certificate
Commercial
Medical
Unknown
Flight hours
514 total · 54 in this make and model · 364 as pilot in command · 52 in the last 90 days · 12 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
60 statute miles
Lowest ceiling
8,000 ft broken
Temperature
34 °F, dew point 28 °F
Altimeter
29.00 inHg
Observed at
HVE, 15 nm away

FAA reports on this event · 1

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