Airworthiness Directive · Amendment 39-17740 · Placards and markings
Cessna Aircraft Company Airplanes
This AD applies to Cessna Aircraft Company Models 310, 320, 340, 401, 402, 411, 414, and 421 airplanes identified in Cessna Aircraft Company Service Bulletin MEB97-4, dated March 24, 1997, certificated in any category.
We are adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company (Cessna) Models 310, 320, 340, 401, 402, 411, 414, and 421 airplanes. This AD was prompted by an investigation of recent and historical icing-related accidents and incidents for the products listed above. This AD requires either having the supplemental airplane flight manual/airplane flight manual supplement (SAFM/AFMS) inside the airplane and accessible to the pilot during the airplane's operation or installing a placard that prohibits flight into known icing conditions and installing a placard that increases published airspeed on approach at least 17 mph (15 knots) in case of an inadvertent encounter with icing. We are issuing this AD to correct the unsafe condition on these products.
Comply with the actions specified in paragraphs (g) through (i) of this AD, to include all subparagraphs, unless already done.
Within 100 hours time-in-service (TIS) after April 7, 2014 (the effective date of this AD) or within 3 calendar months after April 7, 2014 (the effective date of this AD), whichever occurs first, incorporate the operational limitations by accomplishing either paragraph (g)(1) or (g)(2) of this AD, to include all subparagraphs:
(1) Incorporate the limitations identified in Appendix 1 of this AD into your airplane maintenance records and install a copy of the approved supplemental airplane flight manual/airplane flight manual supplement (SAFM/AFMS) in Appendix 1 of this AD in the airplane accessible to the pilot; or
(2) Install the following placards:
(i) Cessna placard part number (P/N) DP0500-13 or a placard that states: “This airplane is prohibited from flight into known icing conditions.” If installing the Cessna placard P/N DP0500-13, obtain the placard following Cessna Aircraft Company Service Bulletin MEB97-4, dated March 24, 1997; and
(ii) An additional placard for the applicable airspeed indicator readings listed in paragraph (g)(2)(A) or (g)(2)(B) below, as applicable:
(A) If Airspeed Indicator Reads in MPH. Placard states: “For inadvertent encounters with icing conditions, increase published airspeed on approach at least 17 mph.”
(B) If Airspeed Indicator Reads in Knots. Placard states: “For inadvertent encounters with icing conditions, increase published airspeed on approach at least 15 KIAS.”
Install the placards on the instrument panel in clear view of the pilot using 1/8-inch black lettering on a white background.
In addition to the provisions of 14 CFR 43.3 and 43.7, the actions required by paragraphs (g)(1) and (g)(2) of this AD, to include all subparagraphs, may be performed by the owner/operator (pilot) holding at least a private pilot certificate and must be entered into the airplane records showing compliance with this AD in accordance with 14 CFR 43.9 (a)(1)-(4) and 14 CFR 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417. This authority is not applicable to aircraft being operated under 14 CFR part 119.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
