The second preface, inserted without revision number change and printed on different stock, is by a "Dr. A. L. Merrow, DARPA/XR-12" (dated November 1967):
"This machine was flown once without a manual. The pilot’s name is redacted. The flight lasted 42 minutes. The aircraft returned with no fuel, one engine seized, and the stick grip twisted 90 degrees out of alignment. The pilot walked to the jeep, lit a cigarette, and said: 'It's not a plane. It's a promise. And I kept it.' No further flights of the Finesse 3300 were attempted after that date." convair finesse 3300 manual
A (from manual): No. Bleach degrades rubber seals and the pump diaphragm. Use a 50/50 white vinegar and water solution only. The second preface, inserted without revision number change
: Ensure the water level remains between the "Min" and "Max" indicators. Control Panel Functions : The aircraft returned with no fuel, one engine
Three potential causes: 1) Cracked drain plug (tighten or replace). 2) Float valve stuck open—tap gently with a screwdriver handle. 3) Unit not level—the manual specifies that the Finesse 3300 requires a perfectly level surface; even a 2-degree tilt will cause overflow.
