NTSB Identification: MIA84FA078.
The docket is stored on NTSB microfiche number 24448.
Accident occurred Wednesday, February 15, 1984 in WALDO, FL
Aircraft: HILLER UH-12E, registration: N19MP
Injuries: 2 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT WAS BEING USED TO DISPENSE AERIAL INCENDIARY DEVICES (AIDS) TO CONTROL FOREST BURNING. THE AIDS WERE 1.25 INCH DIAMETER POLYSTYRENE BALLS CONTAINING POTASSIUM PERMANGANATE. THEY WERE INJECTED WITH ETHYLENE GLYCOL PRIOR TO BEING DROPPED OUT OF THE ACFT BY A DISPENSING MACHINE. THE MACHINE WAS INSTALLED ON THE CABIN FLOOR IN FRONT OF THE RGT DOOR OPENING. FIRE ERUPTED IN AN EXTRA SUPPLY OF AID BALLS LOCATED IN THE CANOPY BUBBLE FORWARD OF THE SEATS. THE EXTRA AIDS WERE STORED IN PLASTIC BAGS. AFTER THE FIRE ERUPTED, THE PLT ATTEMPTED TO LAND ON A NEARBY ROAD , BUT LOST CONTROL BECAUSE OF THE FIRE. THE CREWMEMBER DID NOT JETTISON THE AID DISPENSER BECAUSE THE FIRE WAS IN THE CANOPY BUBBLE. THE AID BALLS HAD BEEN SHIPPED IN BLACK PLASTIC BAGS & PACKED IN CORRUGATED PAPER CARTONS. THE EXTRA SUPPLIES OF AIDS IN THE ACFT WERE IN THE PLASTIC BAGS THAT HAD BEEN REMOVED FROM THE CORRUGATED CARTONS. OPERATING INSTRUCTIONS ALLOWED FOR EXTRA CARTONS OF AIDS TO BE CARRIED IN THE CABIN OF THE ACFT, IF THEY WERE SECURELY FASTENED.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AERIAL APPLICATION EQUIPMENT..FIRE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

PROCEDURES/DIRECTIVES..NOT FOLLOWED..PILOT IN COMMAND

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