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31
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What with flying off 12 hours at SFS to keep my licence valid, and then coping with Dorothy's heart attack on 22 July followed by treatment at Bristol Heart Institute, there has been little attention paid to the aeroplane build project this month.
However, things seem to have quietened down enough for me to get into the garage again today. Store the items for measuring fuel flow in the fuel systems box and the extra hose & ends in the
Speedflow
box.
Reach in through the large access hole in the aft fuselage to remove the DB-25P connector from the TT21 Transponder, but I can't get a screwdriver onto the retaining screws. Remove some stuff from the cockpit and baggage bay and crawl down the back of the fuselage. Unclip TT21 from mount and undo screws. I have a spare female DB-25S connector to mate with the DB-25P on the end of the loom. Check again which wires still have ID flags - 502, 503, 504, 505, 507 & 508 flags are still intact. Add and number insulating tape flags to those wires as backup. Thus the missing flags are 501 (pin 1), 506 (pin 12) and 509 (pin 15). Split off 3 cores of ribbon cable for several metres. Solder red to socket 15, orange to socket 12 and yellow to socket 1. Connect this test harness to the DB-25P connector by the transponder and bring the free end of the ribbon cable up to the cockpit. Check red, orange, yellow in turn against the un-labelled wires in the loom. Apply insulating tape flags and label each. Unplug the test harness. Crawl down the back of the fuselage again, fit DB-25P loom plug to TT21 and tighten retaining screws. Re-clip TT21 to its mount, re-fit BNC plug to antenna and tighten TNC plug on TT21.
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3095.7
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