AD 98-04-28
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 310R | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 335 | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 340A | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 402B | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 402C | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 404 | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 414 | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 414A | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 421B | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
| aircraft | Cessna Aircraft Company | Reims Aviation S.A. | 421C | Airworthiness Directives; Cessna Models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 425, and 441 Airplanes. |
Unsafe Condition
Flight in freezing rain, freezing drizzle, or mixed icing conditions may result in ice build-up on protected surfaces exceeding the capability of the ice protection system, or may result in ice forming aft of the protected surfaces, seriously degrading performance and controllability.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the AFM Limitations Section to specify procedures prohibiting flight in severe icing conditions (determined by visual cues like ice aft of protected surfaces), prohibit autopilot use in such conditions, and require wing icing inspection lights to be operative at night. Revise the Normal Procedures Section to provide recognition cues for severe icing conditions and procedures for exiting, including requesting priority handling from ATC, avoiding abrupt maneuvers, and not extending flaps in icing conditions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after the effective date of this AD (March 13, 1998).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Cessna Aircraft Company and Reims Aviation S.A. models T303, 310R, T310R, 335, 340A, 402B, 402C, 404, F406, 414, 414A, 421B, 421C, 420D, 420H, 425, 440, 500, 525, 550, 560, 680, 690, and 690D; all serial numbers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.