AD 2011-03-12

final rule
Data completeness: 70%

Airworthiness Directives; Hawker Beechcraft Corporation (Type Certificate Previously Held by Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400A and 400T Airplanes

AD Number
2011-03-12
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. FAA-2010-0954
FR Citation
76 FR 6533

Applicability

TypeManufacturerModelDetails
aircraft Raytheon Aircraft Company Airworthiness Directives; Hawker Beechcraft Corporation (Type Certificate Previously Held by Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400A and 400T Airplanes
aircraft Beechcraft Various Airworthiness Directives; Hawker Beechcraft Corporation (Type Certificate Previously Held by Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400A and 400T Airplanes

Unsafe Condition

Missing sealant on the left and right pylon firewall structures, which could result in flames penetrating the seams in the firewall between the engine and the aft fuselage, and a subsequent uncontrolled fire in the aft fuselage in the event of an engine fire.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Perform a detailed inspection for appropriate coverage of firewall sealant of the left and right pylon firewall structure, as specified in Hawker Beechcraft Mandatory Service Bulletin SB 54-3946, Revision 2, dated February 2010. Take all applicable corrective actions before further flight.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 200 flight hours or 12 months after the effective date of this AD, whichever occurs first.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Hawker Beechcraft Corporation (Type Certificate previously held by Raytheon Aircraft Company; Beech Aircraft Corporation) Model 400A airplanes with serial numbers RK-337 through RK-484, RK-486 through RK-570 inclusive, RK-572, RK-573, and RK-575 through RK-577 inclusive; and Model 400T airplane with serial number TX-13.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

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