Airworthiness directives › 2017-12-04
AD 2017-12-04 Airworthiness Directives; Airbus Helicopters
Applicability*9
This AD supersedes AD 2016-20-04, Amendment 39-18670 (81 FR 67904, October 3, 2016).
Compliance
(1) Before further flight: (i) Amend the rotorcraft flight manual (RFM) by inserting a copy of this AD or by making pen-and-ink changes in Section 1, Limitations, by adding the following: AUTOROTATION TRAINING FLIGHTS TO A LANDING AND RUN-ON (RUNNING) LANDING TRAINING ARE PROHIBITED. A landing occurs when the skids contact the ground or other surface and bear the weight of the helicopter regardless of the duration of the landing and regardless of whether the engine is shut down. (ii) Install a placard on the instrument panel in full view of the pilots that states the following: AUTOROTATION TRAINING FLIGHTS TO A LANDING AND RUN-ON (RUNNING) LANDING TRAINING ARE PROHIBITED. (2) Within 25 hours time-in-service: (i) Inspect the crosstube to determine whether the metal is coated. Make a copper sulfate solution by following the Accomplishment Instructions, paragraph 3.B.2.b.1., of Airbus Helicopters Alert Service Bulletin (ASB) No. SA341/342-32.08, Revision 2, dated October 18, 2016 (ASB 32.08). Apply 2 to 3 drops of the solution to Area Z in Figure 1 of ASB 32.08 and wait 10 to 15 seconds. If a dark mark appears as shown in Area 2 of Figure 3 of ASB 32.08, there is no metal coating. If a light mark appears as shown in Area 4 of Figure 3 of ASB 32.08, remove all metal coating in Area Z of Figure 1 of ASB 32.08. (ii) Inspect the hardness of the crosstube by using the criteria in the table under Paragraph 3.B.2.c. of ASB 32.08. If the hardness is not within the value range in the table, before further flight, replace the crosstube. If the hardness is within the value range in the table, apply corrosion protectant to Area Z in Figure 1 of ASB 32.08. (iii) Remove the RFM limitation and the instrument panel placard required by paragraphs (f)(1)(i) and (f)(1)(ii) of this AD.
Required actions
Compliance with AD 2016-20-04 (81 FR 67904, October 3, 2016) before the effective date of this AD is considered acceptable for compliance with this AD.
Unsafe condition
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Affected ADs
This AD defines the unsafe condition as incorrect hardness of the crosstube, which could result in failure of the crosstube and subsequent dropping or tipping of the helicopter.
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