AD 80-12-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Rosemount, Inc. | Pitot-Static Probes | Airworthiness Directives; ROSEMOUNT, INC. All Model 856 AE-12, -13, and -15 Pitot-Static Probes up to and including S/N 49529 |
Unsafe Condition
Icing of the Pitot-Static Probe heater element due to resistance values less than minimum limits, leading to potential inoperative heater and unsafe flight conditions.
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Required Actions
Conduct resistance checks of the Pitot-Static Probe heater element within the next 100 hours time in service using Boeing Alert Service Bulletin 737-30A1018 procedures. Defective probes with resistance below limits must be addressed per MEL Item 30-5 dispatch restrictions.
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Compliance Time
Within the next 100 hours time in service
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Affected Aircraft
ROSEMOUNT, INC. Model 856 AE-12, -13, and -15 Pitot-Static Probes up to and including S/N 49529
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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