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ASN Wikibase Occurrence # 36016
Last updated: 18 November 2021
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Date:19-MAR-1994
Time:13:51
Type:Interstate S-1B1
Owner/operator:Alamo Liaison Group
Registration: N46951
MSN: 168
Fatalities:Fatalities: 4 / Occupants: 4
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:San Antonio, TX -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Unknown
Departure airport:53T
Destination airport:(NONE)
Investigating agency: NTSB
Narrative:
THREE AIRPLANES, A TAYLORCRAFT (L-2), AN INTERSTATE (L-6), AND A PIPER (J-3) WERE FLYING A PHOTOGRAPHIC FORMATION FLIGHT THAT WAS PLANNED AND BRIEFED. THE BRIEF CALLED FOR THE L-6 TO LEAD THE FLIGHT WITH THE L-2 FLYING IN THE LEFT WING POSITION AND THE J-3 IN RIGHT WING FORMATION WITH ABOUT A TWO WING SPAN SEPARATION. THERE WAS NO PLAN FOR ANY SIGNALS BETWEEN PILOTS. A PHOTOGRAPHER IN THE L-6 WAS TO TAKE PICTURES OF THE J-3, WITH THE CITY IN THE BACKGROUND. THE FORMATION HAD EXECUTED TWO LEFT HAND ORBITS, WITH THE L-2 INSIDE THE TURNS, WHEN THE LEAD AIRPLANE INITIATED ANOTHER LEFT TURN. DURING THAT TURN, THE L-2 COLLIDED WITH THE L-6. THE THIRD AIRPLANE WAS NOT INVOLVED. THE LEFT WING SEPARATED FROM THE L-6 AND THE EMPENNAGE OF THE L-2 WAS DAMAGED. FOLLOWING THE COLLISION BOTH AIRPLANES WENT OUT OF CONTROL AND IMPACTED THE GROUND. CAUSE: THE FAILURE OF THE TAYLORCRAFT PILOT TO MAINTAIN ADEQUATE CLEARANCE DURING FORMATION FLIGHT. A FACTOR WAS THE OTHER PILOT'S INADEQUATE PREFLIGHT PLANNING AND PREPARATION REGARDING INFLIGHT FORMATION PROCEDURES.

Sources:

NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001206X00893


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
15-Aug-2011 00:51 TexasTailwheel Updated [Departure airport, Narrative]
21-Dec-2016 19:22 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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