AD 2006-23-09

Airworthiness Directives; Air Tractor, Inc. Model AT-602 Airplanes

1 · Quick read — prepared by AircraftDirectives

Our plain-language summary — not the regulation

Requires you to repetitively inspect (using the eddy current method) the wing center splice joint two outboard fastener holes on both of the wing main spar lower caps for fatigue cracking; repair or replace any wing main spar…

AD number: 2006-23-09
Federal Register document: E6-20123
Citation: 71 FR 68999
Amendment: 39-14798
Docket: Docket No. FAA-2004-20007
Action: Final rule; correction.
Published: 2006-11-29
Effective: 2006-12-14
Effective (as stated in the rule): The effective date of this AD (2006-23-09) remains December 14, 2006.
Issued by: Transportation Department, Federal Aviation Administration
Regulation: 14 CFR 39
Applies to (in our index): Air Tractor AT-Series

2 · Official Federal Register document — government source, verbatim

Reproduced unedited from the Federal Register

[Federal Register Volume 71, Number 229 (Wednesday, November 29, 2006)]
[Rules and Regulations]
[Page 68999]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E6-20123]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2004-20007; Directorate Identifier 2004-CE-50-AD; 
Amendment 39-14798; AD 2006-23-09]
RIN 2120-AA64


Airworthiness Directives; Air Tractor, Inc. Model AT-602 
Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; correction.

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SUMMARY: This document makes a correction to Airworthiness Directive 
(AD) 2006-23-09, which published in the Federal Register on November 9, 
2006 (71 FR 65719), and applies to all Air Tractor, Inc. Model AT-602 
airplanes. AD 2006-23-09 requires you to repetitively inspect (using 
the eddy current method) the wing center splice joint two outboard 
fastener holes on both of the wing main spar lower caps for fatigue 
cracking; repair or replace any wing main spar lower cap where fatigue 
cracking is found; and report any fatigue cracking found. This AD 
results from fatigue cracking at the wing center splice joint outboard 
fastener hole in one of the wing main spar lower caps. The AD number in 
the AD is incorrectly referenced as ``2006-23-01'' instead of ``2006-
23-09'' in two places. This document corrects these references.

DATES: The effective date of this AD (2006-23-09) remains December 14, 
2006.

FOR FURTHER INFORMATION CONTACT: Andrew McAnaul, Aerospace Engineer, 
ASW-150 (c/o MIDO-43), 10100 Reunion Place, Suite 650, San Antonio, 
Texas 78216; telephone: (210) 308-3365; fax: (210) 308-3370.

SUPPLEMENTARY INFORMATION: 

Discussion

    On October 26, 2006, the FAA issued AD 2006-23-09, Amendment 39-
14798 (71 FR 65719, November 9, 2006), which applies to Air Tractor, 
Inc. Model AT-602 airplanes. AD 2006-23-09 requires you to repetitively 
inspect (using the eddy current method) the wing center splice joint 
two outboard fastener holes on both of the wing main spar lower caps 
for fatigue cracking; repair or replace any wing main spar lower cap 
where fatigue cracking is found; and report any fatigue cracking found.
    The AD number in the AD is incorrectly referenced as ``2006-23-01'' 
instead of ``2006-23-09'' in two places.

Need for the Correction

    This correction is needed to assure that the airplane records and 
documentation shows that the applicable AD is complied with.

Correction of Publication

    Accordingly, the publication of November 9, 2006 (71 FR 65719), of 
Amendment 39-14798; AD 2006-23-09, which was the subject of FR Doc. 06-
18688, is corrected as follows:

Section 39.13 [Corrected]

    On page 65719, in the first column and sixth line of the document, 
replace ``2006-23-01'' with ``2006-23-09.''
    On page 65721, in the first column and fourth line, replace ``2006-
23-01'' with ``2006-23-09.''
    Action is taken herein to correct this reference in AD 2006-23-09 
and to add this AD correction to section 39.13 of the Federal Aviation 
Regulations (14 CFR 39.13).
    The effective date remains December 14, 2006.

    Issued in Kansas City, Missouri, on November 20, 2006.
David R. Showers,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E6-20123 Filed 11-28-06; 8:45 am]
BILLING CODE 4910-13-P

Sources. Section 1 is written by AircraftDirectives from the record below and is a reading aid only. Section 2 is the United States Government's own text, reproduced without edit.

Federal Register: https://www.federalregister.gov/documents/2006/11/29/E6-20123/airworthiness-directives-air-tractor-inc-model-at-602-airplanes

Official PDF: https://www.govinfo.gov/content/pkg/FR-2006-11-29/pdf/E6-20123.pdf

Packet generated 2026-08-18 08:50 UTC.

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Section 1 is a reading aid, not the rule. It is our own plain-language condensation, written to help a reader find the relevant directive quickly. It is NOT a substitute for the regulation, it may omit conditions, exceptions, compliance times, alternative methods of compliance (AMOCs) and applicability limits, and it has no legal force whatsoever. Only the official text governs. Where Section 1 and Section 2 differ in any respect, Section 2 - and the official source it was retrieved from - controls absolutely.

Responsibility remains with the owner/operator. Under 14 CFR §91.403 and §91.417 the owner or operator is responsible for maintaining airworthiness and for required records; under §39.7 no person may operate a product to which an airworthiness directive applies except in accordance with that directive. Determining applicability to a specific serial number and configuration, and performing or supervising any required action, is the responsibility of the owner/operator and appropriately certificated personnel.

Accuracy and currency. Section 2 was retrieved at the time stamped above and is reproduced without edit; Federal Register material is a work of the United States Government. Directives are amended, corrected and superseded over time, and this sheet is a snapshot, not a live record - it does not update after printing. Re-check the official sources before acting on it. This packet is provided without warranty of any kind, express or implied, including fitness for a particular purpose. We do not sell parts and have no commercial interest in any action a directive may require.