AD 92-11-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters Deutschland GmbH | BO-105LS A-3 | Airworthiness Directives; MESSERSCHMITT-BOLKOW-BLOHM (MBB) Model BO 105 LS A-3 Helicopters |
Unsafe Condition
Failure of the torque indication hose assembly during an engine compartment fire could fuel the fire with engine oil, leading to possible loss of the helicopter.
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Required Actions
Replace the existing torque indication hose, part number AE707355-1, with a fire resistant hose, part number AE705145-14, following MBB Alert Service Bulletin ASB-BO 105 LS-60-4, Revision 1. Special flight permits may be obtained under FAR 21.197 and 21.199 to operate to a maintenance location.
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Compliance Time
Required no later than July 31, 1992, unless previously accomplished.
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Affected Aircraft
MBB Model BO 105 LS A-3 helicopters, serial numbers 2001 through 2037, equipped with torque indication hose assembly part number AE707355-1.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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