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Federal Register / Vol. 86, No. 136 / Tuesday, July 20, 2021 / Rules and Regulations
Leonardo S.p.a. Model AW189
helicopters. This AD was prompted by the identification of misleading information in the emergency procedure for the 12 FUEL LOW caution message. This AD requires revising the existing Rotorcraft Flight Manual RFM
for your helicopter. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective August 24, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain document listed in this AD
as of August 24, 2021.
ADDRESSES: For service information identified in this final rule, contact Leonardo S.p.A. Helicopters, Emanuele Bufano, Head of Airworthiness, Viale G.Agusta 520, 21017 C.Costa di Samarate Va Italy; telephone +39
0331225074; fax +390331229046; or at https customerportal.leonardo company.com/en-US/. You may view the referenced service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX
76177. It is also available at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0302.

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Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210302; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the European Union Aviation Safety Agency EASA AD, any comments received, and other information. The street address for Docket Operations is U.S. Department of Transportation, Docket Operations, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT:
Mitch Soth, Flight Test Engineer, Southwest Section, Flight Test Branch, Compliance & Airworthiness Division, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817 222
5110; email mitch.soth@faa.gov.
SUPPLEMENTARY INFORMATION:
Background The FAA issued a notice of proposed rulemaking NPRM to amend 14 CFR
part 39 by adding an AD that would apply to Leonardo S.p.a. Model AW189
helicopters. The NPRM published in the Federal Register on April 19, 2021 86
FR 20336. In the NPRM, the FAA

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proposed to require revising page 3118
of Section 3, Emergency and Malfunction Procedures, of the existing RFM for your helicopter to add remaining flight times minutes based on TQ value % and conditions that further reduce the remaining flight times. The NPRM was prompted by EASA AD 20190136, dated June 11, 2019 EASA AD 20190136, issued by EASA, which is the Technical Agent for the Member States of the European Union, to correct an unsafe condition for Leonardo S.p.A. formerly Finmeccanica Helicopter Division, AgustaWestland Model AW189
helicopters. EASA advises of the identification of misleading information in the AW189 RFM Emergency procedure associated with the 12
FUEL LOW caution message. In particular, the procedure at issue instructs the pilot to land as soon as practicable within 20 minutes.
However, this remaining flight time is guaranteed only if a constant torque value of 50% is maintained. The correct time limit depends on the fuel consumption at different engine power settings. Accordingly, EASA AD 2019
0136 requires amending section 3 of the AW189 RFM, Emergency and malfunction procedures, informing all flight crews, and thereafter, operating the helicopter accordingly. This condition, if not addressed, could result in the wrong estimation of the remaining flight time in a low fuel condition, possibly resulting in an uncommanded engine in-flight shutdown and forced landing, with consequent damage to the helicopter or injury to occupants.
EASA initially issued EASA AD
20190103, dated May 9, 2019 EASA
AD 20190103, to address this unsafe condition. EASA issued EASA AD
20190136 to supersede EASA AD
20190103 to require using the corrected amendment of the AW189
RFM.
Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the costs.
Conclusion These helicopters have been approved by EASA and are approved for operation in the United States. Pursuant to the FAAs bilateral agreement with the European Union, EASA has notified the FAA about the unsafe condition described in its AD. The FAA reviewed the relevant data and determined that
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air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on these helicopters. Since the FAA issued the NPRM, the website address for Leonardo S.p.a. has changed. This AD updates that contact information to obtain service documentation. Additionally, the FAA
made edits to clarify that AW189RFM, Document No. 189G0290X002, Record of Temporary Revisions, TR No. 31, Revision A, dated May 24, 2019
TR 31 Rev A is included in Annex A
of Leonardo Helicopters Document No.
189G0257A061, AW189MAF for EASA RFM Issue 2 TR 31, Low Fuel Caution Procedure, Issue B, dated May 22, 2019. This AD is otherwise adopted as proposed in the NPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed TR 31 Rev A, which specifies remaining flight times minutes based on TQ value % if the XFEED is closed or if the XFEED is open with both fuel pumps ON. TR 31 Rev A also specifies that the remaining flight times minutes are further reduced if the XFEED is open, both fuel pumps are ON and one tank has emptied, and the 2 engines are supplied from the remaining tank.
This service information is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section.
Differences Between This AD and the EASA AD
EASA AD 20190136 requires revising the existing RFM for your helicopter within 14 days, whereas this AD requires that action within 14 hours time-in-service after the effective date of this AD instead. EASA AD 20190136
requires removing the RFM changes previously required by EASA AD 2019
0103, whereas this AD does not.
Costs of Compliance The FAA estimates that this AD
affects 4 helicopters of U.S. Registry.
Labor rates are estimated at $85 per work-hour. Based on these numbers, the FAA estimates the following costs to comply with this AD.
Revising the existing RFM for your helicopter takes about 0.25 work-hour for an estimated cost of $21 per helicopter and $84 for the U.S. fleet.
Authority for This Rulemaking Title 49 of the United States Code specifies the FAAs authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of
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