# NTSB LAX97LA287: Aerostar S-55A, N3607B, Marana, AZ, August 13, 1997 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: August 13, 1997, 06:45 local (13:45 UTC) - Place: Marana, AZ - Coordinates: 32.450752, -111.289413 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=32.4508&lon=-111.2894&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 2 serious - Status: Completed, report April 10, 1998 - Report: Approved by Office Director - NTSB case key (mKey): 29874 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX97LA287 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/29874/pdf - Page: https://openairdocs.org/ntsb/LAX97LA287 ## Probable cause The pilot's in-flight planning/decision to continue his flight after striking a fence, and his inability to attain the proper climb rate, which subsequently led to the in-flight collision with the transmission power line. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight collision with object, takeoff - initial climb - object - wire,transmission (cause) - in-flight planning/decision - inadequate, pilot in command (cause) - aborted takeoff - not performed, pilot in command (cause) - proper climb rate - not attained, pilot in command (cause) ## Analysis The pilot of the balloon departed from a field with one passenger during his second flight of the day and collided with a power line. He landed upwind of some nearby power lines during his first landing. He said that immediately after takeoff the balloon basket contacted and subsequently cleared a fence during the initial climb. The pilot stated in a postaccident interview that the flight should have been aborted after coming into contact with the fence, but he elected to continue. The balloon continued to climb but at a slow rate, even with the double burners. The balloon came into contact with the power line at 50 to 60 feet above ground level. The power line broke and came into contact with the fuel tank, which ignited the propane and propagated an in-flight fire. ## Factual narrative On August 13, 1997, at 0645 hours mountain standard time, an Aerostar S-55A, N3607B, collided with a power line during the initial ascent from Marana, Arizona. The balloon's propane line ruptured, an in-flight fire ensued, and the balloon subsequently crashed. The balloon was destroyed by the in-flight fire. The private pilot and his passenger sustained serious injuries. The aircraft was operated as a personal flight under 14 CFR Part 91 when the accident occurred. The flight originated in Marana at 0644. Visual meteorological conditions prevailed at the time of the accident. The pilot stated that this was his second flight of the day. He took off from the same location at 0605 with one passenger prior to this flight. He stated that the second flight segment had a lighter weight passenger onboard than was the case with the first flight. He stated that the "wind blew him into the power line," at an altitude of approximately 50 to 60 feet above ground level. The pilot originally told the Federal Aviation Administration that the wind "picked up to 18 knots from 110 to 120 degrees." The pilot stated in his written report that his "first mistake was deciding to land upwind of the power lines." He said that immediately after takeoff, the balloon basket contacted, then cleared, a barbed wire fence. He stated that he should have aborted the flight upon contact with the fence, but that he elected to continue. The balloon continued to climb slowly, even with the double burners on full. The pilot stated that he "felt at this point that the only choice was to climb over the power lines, but missed clearing them by three feet." According to the pilot, the power line broke in the collision sequence and arced the fuel tank. The arcing burned a hole in the fuel tank, which then ignited a jet of propane fuel, which subsequently caught the wicker basket on fire. ## Aircraft - Registration: [N3607B](https://openairdocs.org/deregistered/N3607B-2004-05-11), registration cancelled 2004-05-11, S/N S55A-3046 (OpenAirDocs) - Reported make and model: Aerostar S-55A - Registry model: [Aerostar International RAVEN S-55A](https://openairdocs.org/model/aerostar-international-raven-s-55a) (registry code 7485055) (OpenAirDocs) - Category: Balloon - Serial number: S55A-3046 - Airframe hours: 305 - Engines: unknown - Damage: Destroyed - Fire: In-Flight - Flight: Personal, Part 91 - Registered owner: Barnett S. Brenner - Airworthiness certificate: Standard, Normal - Last inspection: Annual, February 5, 1997, 78 hours before - Departed: AZ ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 45; private; flight hours: 79 total, 78 in this make and model, 65 as pilot in command, 39 in the last 90 days, 5 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Dawn - Wind: 110° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 73 °F, dew point 66 °F - Altimeter: 30.00 inHg - Observed at: TUS ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19970813022149A](https://openairdocs.org/incident/19970813022149A), Aug 13, 1997: Raven S55A, Marana, AZ, Destroyed. Struck power line on ascent. Burned. Blamed wind drift. Basket first hit a fence. Failed timely abort. From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.