AD 2019-23-08

The FAA is superseding Airworthiness Directive (AD) 2019-03- 19, which applied to all Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. AD 2019-03-19 required a functional check of certain fuel probes, and replacement with a serviceable part if necessary. This AD continues to require a functional check of certain fuel probes, and replacement with a serviceable part if necessary. This AD also revises the definition of a ``serviceable part.'' This AD was prompted by reports that certain fuel probes indicated misleading fuel quantities on the engine indicating and crew alerting system (EICAS). The FAA is issuing this AD to address the unsafe condition on these products.

Final rule.

Adoption of the Amendment

Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0 1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec. 39.13 [Amended]

0 2. The FAA amends Sec. 39.13 by removing Airworthiness Directive (AD) 2019-03-19, Amendment 39-19571 (84 FR 6062, February 26, 2019), and adding the following new AD:

2019-23-08 Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems): Amendment 39-19802; Docket No. FAA-2019-0669; Product Identifier 2019-NM-091-AD.

(a) Effective Date

This AD is effective January 7, 2020.

(b) Affected ADs

This AD replaces AD 2019-03-19, Amendment 39-19571 (84 FR 6062, February 26, 2019) (``AD 2019-03-19'').

(c) Applicability

This AD applies to all Saab AB, Saab Aeronautics (formerly known as Saab AB, Saab Aerosystems) Model SAAB 2000 airplanes, certificated in any category.

(d) Subject

Air Transport Association (ATA) of America Code 28, Fuel.

(e) Reason

This AD was prompted by reports that certain fuel probes indicated misleading fuel quantities on the engine indicating and crew alerting system (EICAS). The FAA is issuing this AD to address deteriorated capacity of the fuel probes, which could lead to incorrect fuel reading, possibly resulting in fuel starvation and uncommanded engine in-flight shutdown, and consequent reduced control of the airplane.

(f) Compliance

Comply with this AD within the compliance times specified, unless already done.

(g) Retained Definition of Affected Part and New Definition of a Serviceable Part

This paragraph restates the requirements of paragraph (g) of AD 2019-03-19, with a new definition of a ``serviceable part.''
(1) An ``affected part'' is a fuel probe having part number (P/ N) 20136-0101, P/N 20136-0102, P/N20136-0103, P/N 20136-0104, P/N 20136-0105, or P/N 20136-0106; with fuel low level sensors having P/ N 20137-0101.
(2) A ``serviceable part'' is an affected part that has accumulated less than 1,500 total flight hours or 12 months since first installation on an airplane, having been checked and found to be within the acceptable tolerances, in accordance with the Accomplishment Instructions of Saab Service Bulletin 2000-28-028, dated April 19, 2018, or received as serviceable following repair or overhaul.

Note 1 to paragraph (g)(2): The definition of a ``serviceable part'' has been changed as of the effective date of this AD. Operators who have already complied with the requirements of paragraph (i) of this AD before the effective date of this AD using the previous definition of a ``serviceable part,'' which was ``an affected part that has accumulated less than 1,500 total flight hours or 12 months since first installation on an airplane,'' do not need to redo the replacementspecified in paragraph (i) of this AD using the new definition of a serviceable part.

(h) Retained Functional Check, With No Changes

This paragraph restates the requirements of paragraph (h) of AD 2019-03-19, with no changes. Within 1,500 flight hours or 12 months after April 2, 2019 (the effective date of AD 2019-03-19), whichever occurs first, accomplish a functional check of the fuel indicator gauging accuracy and the low level warning, in accordance with the Accomplishment Instructions of Saab Service Bulletin 2000-28-028, dated April 19, 2018.

(i) Retained Corrective Action, With No Changes

This paragraph restates the requirements of paragraph (i) of AD 2019-03-19, with no changes. If the functional check required by paragraph (h) of this AD is found to be out of tolerance, within the limits and under the applicable conditions, as specified in the operator's existing Minimum Equipment List (MEL), replace the affected part with a serviceable part, in accordance with the Accomplishment Instructions of Saab Service Bulletin 2000-28-028, dated April 19, 2018.

(j) Parts Installation Limitation

As of the effective date of this AD, no person may install, on any airplane, an affected part, unless it is a serviceable part, as defined in paragraph (g)(2)(ii) of this AD.

(k) Other FAA AD Provisions

(1) Alternative Methods of Compliance (AMOCs): The Manager, International Section, Transport Standards Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the International Section, send it to the attention of the person identified in paragraph (l)(2) of this AD. Information may be emailed to 9-ANM-116-AMOC-REQUESTS@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office.
(2) Contacting the Manufacturer: As of the effective date of this AD, for any requirement

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in this AD to obtain corrective actions from a manufacturer, the action must be accomplished using a method approved by the Manager, International Section, Transport Standards Branch, FAA; or the European Union Aviation Safety Agency (EASA); or Saab AB, Saab Aeronautics' EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature.

(l) Related Information

(1) Refer to Mandatory Continuing Airworthiness Information (MCAI) EASA AD 2018-0187R1, dated May 10, 2019, for related information. This MCAI may be found in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2019-0669.
(2) For more information about this AD, contact Shahram Daneshmandi, Aerospace Engineer, International Section, Transport Standards Branch, FAA, 2200 South 216th St., Des Moines, WA 98198; telephone and fax 206-231-3220.

(m) Material Incorporated by Reference

(1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do the actions required by this AD, unless this AD specifies otherwise.
(3) The following service information was approved for IBR on April 2, 2019 (84 FR 6062, February 26, 2019).
(i) Saab Service Bulletin 2000-28-028, dated April 19, 2018.
(ii) [Reserved]
(4) For service information identified in this AD, contact Saab AB, Saab Aeronautics, SE-581 88, Link[ouml]ping, Sweden; telephone +46 13 18 5591; fax +46 13 18 4874; email saab2000.techsupport@saabgroup.com; internet http://www.saabgroup.com.
(5) You may viewthis service information at the FAA, Transport Standards Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195.
(6) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

Discussion

The European Union Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Union, has issued AD 2018-0187R1, dated May 10, 2019 (``EASA AD 2018-0187R1'') (also referred to as the Mandatory Continuing Airworthiness Information, or ``the MCAI''), to correct an unsafe condition for all Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. You may examine the MCAI in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2019-0669.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2019-03-19, Amendment 39-19571 (84 FR 6062, February 26, 2019) (``AD 2019-03-19''). AD 2019-03-19 applied to all Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. The NPRM published in the Federal Register on September 12, 2019 (84 FR 48083). The NPRM was prompted by reports that certain fuel probes indicated misleading fuelquantities on the EICAS. The NPRM proposed to continue to require a functional check of certain fuel probes, and replacement with a serviceable part if necessary. The NPRM also proposed to revise the definition of a ``serviceable part.'' The FAA is issuing this AD to address deteriorated capacity of the fuel probes, which could lead to incorrect fuel reading, possibly resulting in fuel starvation and uncommanded engine in-flight shutdown, and consequent reduced control of the airplane. See the MCAI for additional background information.

Comments

The FAA gave the public the opportunity to participate in developing this final rule. The FAA received no comments on the NPRM or on the determination of the cost to the public.

Change Made to Paragraph (g) of This AD

Based on a recommendation by Office of the Federal Register (OFR), the FAA has revised paragraph (g)(2) of this AD to only include the new definition of a ``serviceable part,'' which has been changed from thedefinition used in AD 2019-03-19. Paragraph (g)(2) of the proposed AD included an explanation that operators who have already complied with the requirements of paragraph (i) of this AD before the effective date of this AD using the previous definition of a ``serviceable part'' do not need to redo the replacement specified in paragraph (i) of this AD using the new definition of a serviceable part. The FAA has removed that information from paragraph (g)(2) of this AD and added that information to note 1 to paragraph (g)(2) of this AD. The intent of that information has not changed.

Conclusion

The FAA reviewed the relevant data and determined that air safety and the public interest require adopting this final rule with the changes described previously and minor editorial changes. The FAA has determined that these minor changes:
Are consistent with the intent that was proposed in the NPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was already proposed in the NPRM.
We also determined that these changes will not increase the economic burden on any operator or increase the scope of this final rule.

Related Service Information Under 1 CFR Part 51

This AD requires Saab Service Bulletin 2000-28-028, dated April 19, 2018, which the Director of the Federal Register approved for incorporation by reference as of April 2, 2019 (84 FR 6062, February 26, 2019). 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.

Costs of Compliance

The FAA estimates that this AD affects 8 airplanes of U.S. registry.
The FAA estimates the following costs to comply with this AD:

Estimated Costs for Required Actions ----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators ---------------------------------------------------------------------------------------------------------------- Retained actions from AD 2019-03-19... 8 work-hours x $85 per $0 $680 $5,440
hour = $680. ----------------------------------------------------------------------------------------------------------------

The FAA estimates the following costs to do any necessary on- condition action that would be required based on the results of any required actions. The FAA has no way of determining the number of aircraft that might need this on-condition action:

Estimated Costs of On-Condition Actions ------------------------------------------------------------------------
Cost per
Labor cost Parts cost product ------------------------------------------------------------------------ 2 work-hours x $85 per hour = $170.... $6,295 $6,465 ------------------------------------------------------------------------

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The new definition of a ``serviceable part'' specified in this AD adds no additional economic burden.

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: ``General requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action.
This AD is issued in accordance with authority delegated by the Executive Director, Aircraft Certification Service, as authorized by FAA Order 8000.51C. In accordance with that order, issuance of ADs is normally a function of the Compliance and Airworthiness Division, but during this transition period, the Executive Director has delegated the authority to issue ADs applicable to transport category airplanes and associated appliances to the Director of the System Oversight Division.

Regulatory Findings

The FAA determined that this AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government.
For the reasons discussed above, I certify that this AD:
(1) Is not a ``significant regulatory action'' under Executive Order 12866,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.