Airworthiness Directive · Amendment 39-16905 · Airspeed indicator
Hawker Beechcraft Corporation Airplanes Equipped With a Certain Supplemental Type Certificate (STC)
This AD applies to Hawker Beechcraft Corporation Models 95-C55, D55, E55, 58, and 58A airplanes, all serial numbers that are:
(1) equipped with Supplemental Type Certificate (STC) SA1762SO; and
(2) certificated in any category.
Note 1: STC SA1762SO is sometimes referred to as the “Foxstar modification.” This modification includes new Continental IO-550 engines, new Hartzell 4-bladed propellers, and the addition of winglets.
We are adopting a new airworthiness directive (AD) for all Hawker Beechcraft Corporation Models 95-C55, D55, E55, 58, and 58A airplanes equipped with a certain STC. This AD requires assuring the airspeed indicator(s) and/or airspeed limitations placard(s) have the correct minimum control speed (V<INF>MC</INF>) markings for the STCs installed. This AD was prompted by information that suggests the affected airplane models with a certain STC installed may not have the appropriate V<INF>MC</INF> markings on the airspeed indicator(s). We are issuing this AD to correct the unsafe condition on these products.
Within the next 10 hours time-in-service (TIS) after December 29, 2011 (the effective date of this AD) or within the next 30 days after December 29, 2011 (the effective date of this AD), whichever occurs first, inspect all added placards, pilot operating handbooks (POHs), and airplane flight manual (AFM) supplements to identify modifications other than STC SA1762SO that state a V MC limitation.
Note 2: The abbreviation V MC for minimum control speed used in this AD may be identified in the AFM and AFM supplements as V MCA.
(1) If no modifications that state a V MC limitation are identified, other than STC SA1762SO, within the compliance time specified in paragraph (g) of this AD, inspect the V MC marking on the airspeed indicator(s) and airspeed limitations placard(s) to assure they are marked accurately to match the V MC specified in the AFM supplement associated with STC SA1762SO.
(i) If the V MC marking on both the airspeed indicator(s) and the airspeed limitations placard(s) do match the V MC specified in the AFM supplement associated with STC SA1762SO, paragraph (g)(1)(iii) is the only other action required by this AD.
(ii) If either the V MC marking on the airspeed indicator(s) or the airspeed limitations placard(s) do not match the V MC specified in the AFM supplement associated with STC SA1762SO, before further flight after the inspection required in paragraph (g)(1) of this AD, install a temporary placard(s) for the airspeed indicator(s) and/or install a temporary placard(s) over the V MC marked on the airspeed limitations placard(s), as applicable.
(A) The V MC as specified on both the airspeed indicator(s) or temporary placard(s) and the airspeed limitations placard(s) must match the V MC specified in the AFM supplement associated with STC SA1762SO, following the instructions in paragraph (h) of this AD.
(B) Before further flight after the inspection required in paragraph (g)(1) of this AD, you may have the airspeed indicator(s) permanently remarked and/or permanently remark the airspeed limitations placard(s) as required in paragraph (i), Remarking the Airspeed Indicator(s) and the Airspeed Limitations Placard(s), of this AD in lieu of installing the temporary placard(s) for the airspeed indicator(s) and/or installing the temporary placard(s) for the V MC on the airspeed limitations placard(s).
(iii) If the AFM lists an intentional one-engine-inoperative speed (V SSE), you must use the formula below in paragraph (g)(1)(iii)(A) of this AD and establish a new V SSE, unless the existing V SSE is equal to or greater than the V SSE determined by the formula. If the AFM does not state a V SSE, skip forward to the actions required in paragraph (h) of this AD, Temporary Airspeed Indicator(s) and Temporary Airspeed Limitations Placard(s) Installation.
(A) New V SSE = ((V SSE from the AFM)/(V MC from the AFM)) × (V MC from the AFM supplement associated with STC SA1762SO).
(B) If necessary, insert the following language for the new V SSE into the AFM in all areas that refer to V SSE: “The revised V SSE is ____ in accordance with AD 2011-27-04.”
(2) If modifications that state a V MC limitation are identified, in addition to STC SA1762SO, within the compliance time specified in paragraph (g) of this AD, inspect the V MC marking on the airspeed indicator(s) and the airspeed limitations placard(s) to assure they match and are marked accurately with the highest V MC specified in either the AFM or any placards and/or AFM supplements associated with any modifications that state a V MC limitation.
(i) If the V MC marking on the airspeed indicator(s) and the airspeed limitations placard(s) match and are marked with the highest V MC specified in either the AFM or any placards and/or AFM supplements associated with any modifications that affect V MC, skip forward to the actions required in paragraph (g)(2)(iii) of this AD.
(ii) If the V MC marking on the airspeed indicator(s) and the airspeed limitations placard(s) do not match and/or are not marked with the highest V MC specified in either the AFM or any placards and/or AFM supplements associated with any modifications that affect V MC, before further flight after the inspection required in paragraph (g)(2), install a temporary placard(s) for the airspeed indicator(s) and/or install a temporary placard(s) over the V MC marked on the airspeed limitations placard(s), as applicable.
(A) The V MC on both the airspeed indicator(s) and the airspeed limitations placard(s) must match the highest V MC specified in either the AFM or any placards and/or AFM supplements associated with any modifications that affect V MC, following the instructions in paragraph (h) of this AD, Temporary Airspeed Indicator(s) and Temporary Airspeed Limitations Placard(s) Installation.
(B) Before further flight after the inspection required in paragraph (g)(2), you may have the airspeed indicator(s) permanently remarked and/or permanently remark the airspeed limitations placard(s) as required in paragraph (i), Remarking the Airspeed Indicator(s) and the Airspeed Limitations Placard(s), of this AD in lieu of installing the temporary placard(s) for the airspeed indicator(s) and/or installing the temporary placard(s) for the V MC on the airspeed limitations placard(s).
(iii) If the AFM or any of the AFM supplements that state a V MC limitation also list a V SSE, you must use the formula below in paragraph (g)(2)(iii)(A) of this AD and establish a new V SSE, unless the existing V SSE is equal to or greater than the V SSE determined by the formula. If the AFM or any of the AFM supplements do not list a V SSE, skip forward to the actions required in paragraph (h) of this AD, Temporary Airspeed Indicator(s) and Temporary Airspeed Limitations Placard(s) Installation.
(A) New V SSE = ((V SSE from the AFM)/(V MC from the AFM)) × (V MC as determined by paragraph (g)(2) of this AD).
(B) If the V SSE listed in the AFM or any AFM supplements that state a V MC limitation is higher than the V SSE determined by paragraph (g)(2)(iii)(A) of this AD above, then the highest of all these values shall be the new V SSE.
(C) If necessary, insert the following language for the new V SSE into the AFM in all areas that refer to V SSE, including AFM supplements: “The revised V SSE is ____ in accordance with AD 2011-27-04.”
(1) If required by the actions in paragraph (g)(1)(ii) or (g)(2)(ii) of this AD, fabricate a temporary placard(s) (using at least 1/8 -inch black letters on a white background) with the following words and install the placard(s) on the instrument panel in the nearest practical location to the airspeed indicator(s) within the pilot's clear view: “V MC = ____.” Insert in the blank space the V MC as determined by the actions required in either paragraph (g)(1)(ii) or (g)(2)(ii) of this AD.
(2) If the V MC on the existing airspeed limitations placard is different than determined in either paragraph (g)(1)(ii) or (g)(2)(ii) of this AD, fabricate a temporary placard(s) (using letter sizes similar to those on the existing airspeed limitations placard(s) with black letters on a white background) with the V MC as determined by the actions required in either paragraph (g)(1)(ii) or (g)(2)(ii) of this AD and install the placard(s) over the V MC listed on the existing airspeed limitations placard(s).
Note 3: You may use FAA Advisory Circular 43.13-2B for additional guidance on installing placards. You can find Advisory Circular 43.13-2B at http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf.
(1) If during either of the inspections required in paragraphs (g)(1) or (g)(2) of this AD, the V MC marking on the airspeed indicator(s) was not marked accurately and required immediate temporary corrective action (placard), within the next 12 months after December 29, 2011 (the effective date of this AD), permanently remark the airspeed indicator(s) with the correct V MC marking. This instrument modification must be done by an appropriately rated repair facility.
(i) After the airspeed indicator(s) has been remarked, mark the airspeed indicator(s) instrument casing to clearly indicate that the markings comply with this AD stating “Modified in compliance with AD 2011-27-04, refer to AD 2011-27-04 for replacement part criteria.”
(ii) Any replacement airspeed indicator must also meet the V MC marking requirements in paragraphs (i)(1) and (i)(1)(i) of this AD.
(iii) After the V MC has been remarked as required in this paragraph, you may remove the temporary placard(s) installed as required in paragraph (g)(1)(ii) and (g)(2)(ii) of this AD.
(iv) Instead of installing the temporary placard(s) after either of the inspections when it is determined the V MC marking on the airspeed indicator(s) is not marked accurately, you may permanently remark the airspeed indicator(s) as required in paragraph (i), Remarking the Airspeed Indicator(s) and the Airspeed Limitations Placard(s), of this AD provided it is done before further flight.
(2) If during either of the inspections required in paragraphs (g)(1) or (g)(2) of this AD, the V MC marking on the airspeed limitations placard(s) was not marked accurately and required immediate temporary corrective action (placard), within the next 12 months after December 29, 2011 (the effective date of this AD), permanently remark or remake the airspeed limitations placard(s) with the correct V MC marking.
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.
