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ONE-TIME AND RECURRING INSPECTION OF OIL DEBRIS DETECTION SYSTEM (ODDS) SELF-SEALING QUICK-DISCONNECT OIL FITTING ON ALL UH-1 SERIES AIRCRAFT, TB 1-1520-210-20-35
ONE-TIME AND RECURRING INSPECTION OF OIL DEBRIS DETECTION SYSTEM (ODDS) SELF-SEALING QUICK-DISCONNECT OIL FITTING ON ALL UH-1 SERIES AIRCRAFT, TB 1-1520-210-20-35
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ONE-TIME AND RECURRING INSPECTION OF OIL DEBRIS DETECTION SYSTEM (ODDS) SELF-SEALING QUICK-DISCONNECT OIL FITTING ON ALL UH-1 SERIES AIRCRAFT, TB 1-1520-210-20-35
ATCOM has received field reports citing failure of the Self-Sealing Break-Away Coupling connecting the Oil Line from the Engine Scavenge Pump to the ODDS Lubriclone Fitter. The pins in the connector are designed to shear in a crash sequence, but are wearing away prematurely. The pins fail when the wear becomes excessive. The internal valve closes and shuts off the oil flow. Pressure in the Oil Line increases and the hose has failed under certain circumstances. Most of the wear on the pins can be attributed to
normal aircraft vibration and side loading caused by the slight misalignment of the 90-Degree Coupling Half at the Lubriclone Filter. Periodic inspection of these couplings is needed to prevent a failure during flight.
ATCOM has received field reports citing failure of the Self-Sealing Break-Away Coupling connecting the Oil Line from the Engine Scavenge Pump to the ODDS Lubriclone Fitter. The pins in the connector are designed to shear in a crash sequence, but are wearing away prematurely. The pins fail when the wear becomes excessive. The internal valve closes and shuts off the oil flow. Pressure in the Oil Line increases and the hose has failed under certain circumstances. Most of the wear on the pins can be attributed to
normal aircraft vibration and side loading caused by the slight misalignment of the 90-Degree Coupling Half at the Lubriclone Filter. Periodic inspection of these couplings is needed to prevent a failure during flight.