Airworthiness Directive

AD 2006-13-06: Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division…

Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) 250-B and 250-C Series Turboprop and Turboshaft Engines

Effective: Jul 26, 2006
Published: Jun 21, 2006
Registered aircraft: 761

Models this AD may apply to

AI-extracted — verify against original

Matched from the AD's applicability section. Applicability must be confirmed by a mechanic against the aircraft's records.

Engines

ALLISON 250-B17
ALLISON 250-B17 SER
ALLISON 250-B17 SER
ALLISON 250-B17B
ALLISON 250-B17C
ALLISON 250-B17D
ALLISON 250-B17E
ALLISON 250-B17F
ALLISON 250-B17F/1
ALLISON 250-B17F/2
ALLISON 250-C18
ALLISON 250-C20
ALLISON 250-C20 SER
ALLISON 250-C20B
ALLISON 250-C20F
ALLISON 250-C20J
ALLISON 250-C20R
ALLISON 250-C20R/1
ALLISON 250-C20R/2
ALLISON 250-C20R/4
ALLISON 250-C20S
ALLISON 250-C20W

Only with: Engines with gas producer rotor assembly tie bolt P/Ns A23008020, E23008020 (EXTEX), 23008020, 6843388, 6876991 (RRC), A23008020 (SAP), or 23008020P (Pacific Sky Supply) installed.
Only with: Engines with gas producer rotor assembly tie bolt P/Ns A23008020, E23008020 (EXTEX), 23008020, 6843388, 6876991 (RRC), A23008020 (SAP), or 23008020P (Pacific Sky Supply) installed.

Applicability

From the AD text

This AD applies to Rolls-Royce Corporation (formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) 250-B17, -B17B, -B17C, -B17D, -B17E, -B17F, -B17F/1, -B17F/ 2, 250-C18, -C20, -C20B, -C20F, -C20J, -C20R, -C20R/1, -C20R/2, -C20R/4, -C20S, and ``C20W series turboprop and turboshaft engines with the gas producer rotor assembly tie bolt part numbers (P/Ns) listed in the following Table 1, installed: Table 1.--Affected Gas Producer Rotor Assembly Tie Bolts Manufacturer Affected part numbers EXTEX Ltd. (EXTEX) A23008020 and E23008020 Rolls-Royce Corporation (RRC) 23008020, 6843388 and 6876991 Superior Air Parts Inc. (SAP) A23008020 Pacific Sky Supply Inc 23008020P These engines are installed on, but not limited to, aircraft in the following Table 2: Table 2.--Applicable Aircraft Helicopter Models Agusta A109, A109A, A109A II, A109C. Arrow Falcon Exporters OH-58A+ and OH-58C. Bell Textron 206A, 206B, 206L. Enstrom TH-28, 480, 480B. Eurocopter France AS355E, AS355F, AS355F1, AS355F2. Eurocopter Deutschland BO-105A, BO-105C, BO-105S. FH-1100 Manufacturing Corp FH-1100. Garlick OH-58A + OH-58C. McDonnell Douglas Company 369D, 369E, 369F, 369H, 369HM…

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