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UH-1 Fuel and Oil Lines
"Here are some photos of the transmission oil line on the left side of the transmission. The line has always gone around the back of the...
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Engine Mounts
The aft mounts for the engine P/N 204-060-102-11 bolted to the tops of the right hand ( bipod ) and left hand ( tripod ) mounts. Note...
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42 Degree and 90 Degree Sight Glasses
I have seen many 42 deg. and 90 deg. gearbox sight glasses that get stained and the oil very dark. Many times this shows up after a...
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Connecting Links Inspection
Back in late 1976 the military came out with TB 55-1500-219-20-6 to inspect the connecting links P/N’s 204-076-267-1 & 3 & 5 ( the parts...
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Droop Cam Shear Pin
The droop cam shear pin was put into the collective, droop cam, N2 governor linkage to separate the collective from the rest of the...
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High Frequency Vibe in Pedals
Several years ago on another contract, we had a 212 that had come in after a day of flying with a logbook entry of “HIGH FREQ VIBRATION...
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Swashplate Trunnion Bolts
When installing trunnion’s in any of the five positions on the swashplate be sure to install the inner retaining bolt first. The one on...
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Tail Rotor Lube
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UH-1 Main Rotor System Question
Alright for those with eagle eyes, what is wrong with this Main Rotor System?