Airworthiness directives › 2004-22-28
AD 2004-22-28 Airworthiness Directives; Raytheon Aircraft Company Model B100 Airplanes
Makes named: raytheon. Models named: B100. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(c) This AD affects Model B100 airplanes, serial numbers BE-1 through BE-136, that are certificated in any category.
Required actions
(e) To address this problem, you must do the following: Actions Compliance Procedures (1) Drill a 0.035-inch hole in each of the hot tube “B” nuts (part number (P/N) AN818-6D and AN818-8D). Within the next 150 hours time-in-service (TIS) or 6 calendar months after December 27, 2004 (the effective date of this AD), whichever occurs first. Follow Raytheon Aircraft Mandatory Service Bulletin No. SB 30-3143, dated September 2001. The applicable airplane maintenance manual also addresses this issue. (2) Tighten the hot lip tube “B” nuts to a specified torque range: (i) Tighten hot lip tube “B” nuts P/N AN818-6D to a torque range of 75 to 125 inch-pounds. (ii) Tighten hot lip tube “B” nuts P/N AN818-8D to a torque range of 150 to 250 inch-pounds. Before further flight after the actions required by paragraph (e)(1) of the AD. Follow Raytheon Aircraft Mandatory Service Bulletin No. SB 30-3143, dated September 2001. The applicable airplane maintenance manual also addresses this issue. (3) Secure the hot lip tube “B” nuts (P/N AN818-6D and AN818-8D) with safety wire. Before further flight after the actions required by paragraph (e)(2) of this AD. Follow Raytheon Aircraft Mandatory Service Bulletin No. SB 30-3143, dated September 2001. The applicable airplane maintenance manual also addresses this issue.
Unsafe condition
(d) This AD is the result of reports of loose “B” nuts on the engine inlet that may loosen and permit a leak in the engine inlet anti-ice system. The actions specified in this AD are intended to detect and correct loose “B” nuts on the engine inlet, which could result in failure of the engine inlet anti-ice system and consequent ice buildup. This failure and ice buildup could lead to an engine's ingestion of ice with loss of engine power or loss of engine.
Affected ADs
(b) None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1