AD 2011-18-11

Airworthiness directive · Flight Controls · Viking Air DHC-3

Effective
October 3, 2011
Published
August 29, 2011 · 76 FR 53633–53636
Issued
August 19, 2011
Supersedes
AD2011-05-02
Model
DHC-3
Data sheet
TCDSA-815
Registered aircraft
76 matched by model
Product
Aircraft · Small airplane
Amendment
39-16793
Docket
FAA-2011-0597
Project
2011-CE-019-AD
Issued as
Final rule

Unofficial copy from the Federal Register XML, document 2011-21876. Only the govinfo PDF is the legal edition. DRS record last changed May 30, 2024.

On this page

Summary

We are superseding an existing airworthiness directive (AD) for all Viking Air Limited (type certificate No. A-815 formerly held by Bombardier Inc. and de Havilland, Inc.) Model DHC-3 airplanes. That AD currently requires repetitively inspecting the elevator control tabs for discrepancies, taking necessary corrective actions to bring all discrepancies within acceptable tolerances, and reporting certain inspection results to the FAA. This new AD retains the actions currently required in AD 2011-05-02 and removes the Supplemental Type Certificate (STC) SA01059SE condition in the Applicability section. This AD was prompted by our determination that we inadvertently omitted certain airplanes from the Applicability section. We are issuing this AD to correct the unsafe condition on these products.

Rule preamble

The FAA’s background, reasoning and cost estimate, published with the AD.

DatesPage 1

This AD is effective October 3, 2011.

The Director of the Federal Register approved the incorporation by reference of certain other publications listed in this AD as of March 31, 2011 (76 FR 10220, February 24, 2011).

AddressesPage 1

For information about the revisions to the FAA-approved maintenance/inspection program identified in this AD, contact Viking Air Ltd., 9574 Hampden Road, Sidney, BC Canada V8L 5V5; telephone: (800) 663-8444; Internet: http://www.vikingair.com. You may review copies of the referenced revisions at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For information on the availability of this material at the FAA, call 816-329-4148.

For further information contactPage 1

George Duckett, Aerospace Engineer, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone: (516) 228-7325; fax: (516) 794-5531; email: george.duckett@faa.gov.

DiscussionPage 1

We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2011-05-02, Amendment 39-16611 (76 FR 10220, February 24, 2011). That AD applies to the specified products. The NPRM published in the Federal Register on June 10, 2011 (76 FR 34011). That NPRM proposed to retain all of the requirements of AD 2011-05-02 and add airplanes to the Applicability section removing the Supplemental Type Certificate (STC) SA01059SE condition.

CommentsPage 1

We gave the public the opportunity to participate in developing this AD. We received no comments on the NPRM or on the determination of the cost to the public.

ConclusionPage 1

We reviewed the relevant data and determined that air safety and the public interest require adopting the AD as proposed except for minor editorial changes. We have determined that these minor changes:

• Are consistent with the intent that was proposed in the NPRM for correcting the unsafe condition; and

• Do not add any additional burden upon the public than was already proposed in the NPRM.

Interim actionPage 1

We are continuing to evaluate the cause of the unsafe condition identified in this AD to enable us to obtain better insight into the nature, cause, and extent of excessive free-play in the elevator control tabs. Based on this evaluation, we may consider further rulemaking.

Costs of CompliancePage 1

We estimate that this AD affects 65 airplanes of U.S. registry.

We estimate the following costs to comply with this AD:

Estimated Costs
ActionLabor costParts costCost per productCost on U.S. operators
Inspection1 work-hour × $85 per hour = $85 per inspection cycleNot applicable$85 per inspection cycle$5,525 per inspection cycle.

We estimate the following costs to do any necessary follow-on actions that will be required based on the results of the inspection. We have no way of determining the number of airplanes that may need this repair/replacement:

On-Condition Costs
ActionLabor costParts costCost per product
Minimum repair1 work-hour × $85 per hour = $85$50$135
Moderate repair3 work-hours × $85 per hour = $255150405
Maximum repair6 work-hours × $85 per hour = $510450960
Authority for This RulemakingPage 1

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.

We are 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.

Regulatory findingsPage 1

We have 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) Is not a “significant rule” under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979),

(3) Will not affect intrastate aviation in Alaska, and

(4) 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.

Adoption of the AmendmentPage 1

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

Adoption of the amendmentPage 1

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

Affected TCDS · 1

The type certificate data sheets for the models this AD names, matched by model and maker.

Registered aircraft · 76

Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.

By aircraft maker
  • Dehavilland67 aircraft
  • Dehavilland Canada8 aircraft
  • Dehavilland-Hansen1 aircraft
By year built
19531966
Registered aircraft by year built: 59 aircraft
19536
19546
19554
195610
19574
195810
19591
19607
19616
19622
19652
19661

17 with no year recorded

By model

Aircraft

See all 76 aircraft

NTSB investigations that cite this AD · 2

Their narratives or probable cause name AD 2011-18-11, often to say whether the aircraft complied with it.