AD 2018-02-15 Airworthiness Directives; British Aerospace Regional Aircraft Airplanes

Models named: HP.137 Jetstream Mk.1, Jetstream Series 200, 3101, Jetstream Model 3201. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to British Aerospace Regional Aircraft Models HP.137 Jetstream Mk.1, Jetstream Series 200 and 3101, and Jetstream Model 3201 airplanes, all serial numbers, certificated in any category.

Unless already done, do the following actions listed in paragraphs (f)(1) through (4) of this AD: (1) For all affected airplanes: Before further flight after March 5, 2018 (the effective date of this AD), replace each component part in the main and nose landing gear assemblies as applicable to airplane model and configuration before exceeding the applicable life limit, following the Accomplishment Instructions in BAE Systems British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32-JA981042 Rev 9, dated July 11, 2017. (2) For the affected Model Jetstream 3201 airplanes: Within the next 50 hours after March 5, 2018 (the effective date of this AD), replace alternative port and starboard axles part numbers (P/N) AIR141958 and P/N AIR141959 that have exceeded the applicable life limits as shown in table 5 of BAE Systems British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32-JA981042 Rev 9, dated July 11, 2017. (3) For all affected airplanes: Before further flight after March 5, 2018 (the effective date of this AD), revise the FAA-approved maintenance program (instructions for continued airworthiness) that the operator or the owner uses to ensure the continuing airworthiness of each operated airplane, as applicable to the airplane model, by incorporating the limitations described in BAE Systems British Aerospace Jetstream Series 3100 and 3200 Service Bulletin 32-JA981042 Rev 9, dated July 11, 2017, as applicable to the airplane model and depending on the airplane configuration. (4) For all affected airplanes: The compliance times in paragraphs (f)(1) and (2) of this AD are presented in flight cycles (landings). If the total flight cycles have not been kept, multiply the total number of airplane hours time-in-service (TIS) by 0.75 to calculate the cycles. For the purposes of this AD: (i) 100 hours TIS × .75 = 75 cycles; and (ii) 1,000 hours TIS × .75 = 750 cycles.

The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Small Airplane Standards Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Doug Rudolph, Aerospace Engineer, FAA, Small Airplane Standards Branch, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4059; fax: (816) 329-4090; email: doug.rudolph@faa.gov . Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. (2) Contacting the Manufacturer: For any requirement in this AD to obtain corrective actions from a manufacturer, the action must be accomplished using a method approved by the Manager, Small Airplane Standards Branch, FAA; or the European Aviation Safety Agency (EASA).

This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and address an unsafe condition on an aviation product. The MCAI describes the unsafe condition as the need for airworthiness limitations for critical components in the main and nose landing gear assemblies. We are issuing this AD to introduce new replacement part numbers and incorporate new limitations for the replacement part numbers to prevent failure of the main and nose landing gear, which could result in loss of control.

This AD supersedes AD 2007-08-06, Amendment 39-15023 (72 FR 18565; April 13, 2007) (“AD 2007-08-06”).