80-01-03 RAVEN INDUSTRIES, INC.: Amendment 39-3648. Applies to model S-50A, serial no. S50A-275, model S-55A, serial nos. S-55A-330 to S-55A-624, and model S-60A, serial nos. S-60A-102 to S-60A-138 hot air balloons certificated in all categories which have installed the parachute top vent.
Compliance required before further flight unless already accomplished.
To allow proper release of the parachute top, accomplish the following or an equivalent modification approved by the Chief, Engineering and Manufacturing Branch, FAA Rocky Mountain Region:
Remove all but the middle 1 inch of the length of the "Velcro" tape "hooks" on each of the 24 4-inch long tapes found on the envelope by use of a razorblade or sharp knife.
Raven Service Bulletin No. 111 dated December 19, 1979, covers this same subject.
This amendment becomes effective January 7, 1980