FAA orders · airworthiness directive · current

2006-12-04: Airworthiness Limitations

FAA order 2006-12-04 is an airworthiness directive in force since June 21, 2006. The FAA's subject line: Airworthiness Limitations. It names Dehavilland DHC-7: about 7 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: other and general.

What it applies to as the FAA lists it

Kind of product: Aircraft
Makes: Viking Air Limited
Models: DHC-7-1, DHC-7-100, DHC-7-101, DHC-7-102, DHC-7-103
On this site: Dehavilland DHC-7 7 registered

Dates and paperwork

In force since: June 21, 2006
Published: June 6, 2006 (signed May 31, 2006)
Docket: FAA-2006-24966
Status: Current
The FAA's document: Read the order on the FAA's site

The FAA's summary their words, unchanged

The FAA is adopting a new airworthiness directive (AD) for certain Viking Air Limited Model DHC-7 airplanes. This AD requires revising the FAA-approved Airworthiness Limitations section of the airplane maintenance manual to prohibit operation of the airplane past its designed life limit for the primary structure, which is 80,000 total flight cycles. This AD also requires contacting the FAA for approval of analysis that substantiates that the airplane is safe to continue operation beyond the designed life limit. This AD results from a report that the designed life limit for the primary structure for the affected airplanes is 80,000 total flight cycles. We are issuing this AD to prevent continued operation of an airplane beyond its designed life limit for the primary structure, which could result in reduced structural integrity of the airplane.

The order itself the regulatory text, as published

Show the full text (2,773 characters)

2006-12-04 Viking Air Limited (Formerly Bombardier, Inc.): Amendment 39-14629. Docket No. FAA-2006-24966; Directorate Identifier 2006-NM- 049-AD. 

Effective Date 

	(a) This AD becomes effective June 21, 2006. 

Affected ADs 

	(b) None 

Applicability 

	(c) This AD applies to Viking Air Limited Model DHC-7-1, DHC-7- 100, DHC-7-101, DHC-7-102, and DHC-7-103 airplanes, certificated in any category; except airplanes having serial numbers 3 through 10 inclusive, 12 through 14 inclusive, and 16 through 27 inclusive. 

Unsafe Condition 

	(d) This AD results from a report that the designed life limit for the primary structure for the affected airplanes is 80,000 total flight cycles. We are issuing this AD to prevent continued operation of an airplane beyond its designed life limit for the primary structure, which could result in reduced structural integrity of the airplane. 

Compliance 

	(e) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. 

Airworthiness Limitations Revision 

	(f) Within 30 days after the effective date of this AD: Revise the FAA-approved Airworthiness Limitations section (ALS) of the Bombardier DHC-7 Dash 7 maintenance manual and the Dash 7 Series 150 maintenance manual to state the following (this may be done by inserting a copy of this AD into the ALS). Thereafter, maintain the airplane in accordance with the limitations specified in these maintenance manual revisions: 

	"Do not operate the airplane beyond 80,000 total flight cycles." 

	(g) When the statement specified in paragraph (f) of this AD has been included in the general revisions of the ALS, the general revisions may be incorporated into the ALS and the copy of the AD may be removed from the ALS. 

	(h) The airworthiness limitation specified in paragraph (f) of this AD may be removed from the maintenance manuals specified in paragraph (f) of this ADafter the Manager, New York Aircraft Certification Office (ACO), FAA, approves analysis that substantiates continued safe operation beyond the designed life limit of 80,000 total flight cycles. 

Alternative Methods of Compliance (AMOCs) 

	(i)(1) The Manager, New York ACO, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. 

	(2) Before using any AMOC approved in accordance with Sec. 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. 

Related Information 

	(j) Canadian airworthiness directive CF-2005-36, dated September 28, 2005, also addresses the subject of this AD. 

Material Incorporated by Reference 

	(k) None.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 7, 2026. Connections as data: /graph/directive/2006-12-04.json · aircraft systems.