AD 71-05-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 99 | Airworthiness Directives; BEECH Models A60, and 99 Series Airplanes |
| aircraft | Textron Aviation Inc. | 99A | Airworthiness Directives; BEECH Models A60, and 99 Series Airplanes |
| aircraft | Textron Aviation Inc. | 99A (FACH) | Airworthiness Directives; BEECH Models A60, and 99 Series Airplanes |
| aircraft | Textron Aviation Inc. | A60 | Airworthiness Directives; BEECH Models A60, and 99 Series Airplanes |
| aircraft | Textron Aviation Inc. | A99 | Airworthiness Directives; BEECH Models A60, and 99 Series Airplanes |
| aircraft | Textron Aviation Inc. | A99A | Airworthiness Directives; BEECH Models A60, and 99 Series Airplanes |
| aircraft | Textron Aviation Inc. | B99 | Airworthiness Directives; BEECH Models A60, and 99 Series Airplanes |
| aircraft | Textron Aviation Inc. | C99 | Airworthiness Directives; BEECH Models A60, and 99 Series Airplanes |
Unsafe Condition
Operation in known icing conditions is unsafe due to insufficient environmental condition approval.
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Required Actions
Prohibit operation in known icing conditions immediately. Modify operating limitations placards to state 'THIS AIRPLANE IS NOT APPROVED FOR FLIGHT IN KNOWN ICING CONDITIONS'. Install specific transducer units (P/N 3E1793, 190-1, 190-2 for A60; P/N 795-1 for 99 series) per manufacturer service instructions or equivalent FAA-approved methods. After transducer installation, the placard modification and operation prohibition no longer apply.
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Compliance Time
Effective immediately for operation prohibition and placard modification; transducer installation required prior to further flight.
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Affected Aircraft
BEECH Models A60 (Serial Numbers P123, P127 through P167) and all 99 series airplanes (Serial Numbers U-1 through U-136) approved for flight into known icing conditions.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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