Airworthiness directives › 2019-09-04
AD 2019-09-04 Airworthiness Directives; Leonardo S.p.A. (Type Certificate Previously Held by Finmeccanica S.p.A., AgustaWestland S.p.A) Helicopters
Applicability*9
This AD is effective July 3, 2019.
Compliance
A one-time special flight permit may be granted provided that the hoist is not used.
Required actions
(1) The Manager, Safety Management Section, Rotorcraft Standards Branch, FAA, may approve AMOCs for this AD. Send your proposal to: David Hatfield, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110; email 9-ASWFTW-AMOC-Requests@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office, before operating any aircraft complying with this AD through an AMOC.
Unsafe condition
(1) Within 10 hours time-in-service (TIS) or before the next hoist operation, whichever occurs first, inspect the rescue hoist handle assembly and the upper part of the cabin doorframe for chafing. The inspection area of the cabin doorframe is depicted in Figure 3 of Leonardo Helicopters Bollettino Tecnico No. 109SP-110, dated February 13, 2017 (BT 109SP-110). Examples of chafing are shown in Figures 10 and 11 of BT 109SP-110. If there is any chafing, before further flight, repair the chafed areas and inspect the first 6 meters (20 feet) of the hoist cable as follows: (i) Measure the diameter of the hoist cable as described in the Compliance Instructions, Part I, paragraphs 3.4.1 through 3.4.2 of BT 109SP-110. (ii) Average the two measurements at each location. If at any location the diameter of the hoist cable is less than 4.7 mm (0.185 inch), before the next hoist operation, remove the hoist cable from service. (iii) Inspect the hoist cable for broken wires, kinks, bird caging, flattened areas, abrasion, and necking, referencing the examples shown and depicted in Figures 5 through 9 of BT 109SP-110. If there are any broken wires, kinks, bird caging, flattened areas, abrasion, or necking, before the next hoist operation, remove the hoist cable from service. (2) Within 25 hours TIS, replace the rescue hoist handle attaching hardware as described in the Compliance Instructions, Part II, paragraphs 3 through 6, of BT 109SP-110.
Affected ADs
This AD defines the unsafe condition as chafing of a rescue hoist cable. This condition could result in detachment of an external load and subsequent injury to persons being lifted.
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