LAX04CA221

NTSB accident investigation · American Blimp A-1-50 · North Las Vegas, NV · May 22, 2004

Accident · No injuriesData collectionFinal report
Date
May 22, 2004, 09:15 local (16:15 UTC)
Place
North Las Vegas, NV
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N154ZPAmerican Blimp A-1-50
Weather
Visual (VMC) · Day
Status
Completed · report September 1, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20040522008399A
Case key
59304

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 ground crew's inability to maintain control of the airship and the pilot's inability to obtain a sufficient rate of climb. Contributing to the accident was unfavorable winds.

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.

Loss of control - on ground/waterTaxi
Weather condition - unfavorable windFactor
Aircraft control - not maintainedGround personnelCause
In flight collision with objectTakeoff - initial climb
Climb - not obtained/maintainedPilot in commandCause

Analysis

During an attempted takeoff the airship collided with a one-story building. The crew released the airship from the mooring mast to conduct its weigh-out and takeoff. A gust of wind caused the ship to translate to the right. The nose ropes manned by the ground crew were ineffective in controlling the movement. The pilot decided to execute a takeoff. However, being fully loaded, the airship was slow to respond despite the pilot's application of full power, full left rudder, and full up elevator control inputs. The landing gear hit the chain link airport fence, and then the airship settled on to a one-story building. The ground crew released the ballast and moved the airship back to the airfield. A second wind gust pushed the airship in to the next building over. The crew deflated the entire envelope and removed it off the building.

Factual narrative

On May 22, 2004, at 0915 Pacific daylight time, an American Blimp Corporation A-1-50 airship, N1542P, collided with a building during takeoff at the North Las Vegas Airport, North Las Vegas, Nevada. Lightship America Corporation was operating the airship under the provisions of 14 CFR Part 91. The airline transport pilot and single crewmember were not injured, and the airship was substantially damaged. Visual meteorological conditions prevailed, and no flight plan had been filed for the positioning flight to Long Beach, California.

The pilot told the National Transportation Safety Board investigator that the airship was fully loaded with fuel and ballast. There were two nose ropes manned with three people each. The crew released the airship from the mooring mast to conduct its weigh-out and takeoff. A gust of wind or thermal caused the ship to translate to the right. The manned nose ropes were ineffective in controlling the movement.

The pilot decided to execute a takeoff. However, being fully loaded, the airship was slow to respond despite the pilot's application of full power, full left rudder, and full up elevator control inputs. The landing gear hit the barbed wire chain link airport fence, and then the airship settled on to a one-story building. The ground crew released the ballast and moved the airship back to the airfield. A second thermal or wind gust pushed the airship in to the next building over. The crew deflated the entire envelope and removed it off the building.

Aircraft

Registration
N154ZP
Reported as
American Blimp A-1-50
Category
Blimp
Serial number
SN104
Engine
Lycoming IO-360-B1G6, reciprocating
Damage
Substantial damage
Flight
Positioning · Part 91
Registered owner
Lightship America Inc
Airworthiness certificate
Standard, Normal
Departed
KVGT · North Las Vegas, NV
Destination
KLGB · Long Beach, CA
Airport
KVGT · North Las Vegas

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
36
Certificates
Commercial, Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2
Flight hours
5,149 total · 100 in this make and model · 70 in the last 90 days · 30 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 6 knots
Altimeter
29.87 inHg
Observed at
KVGT

FAA reports on this event · 1

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