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Kathy P. Aileron MARCH 23,2002
Chapter 8: Aircraft Maintenance Records 8
8-7
Figure 8-2. FAA Form 337, Major Repair and Alteration (Page 2 of 2).
NOTICE
Weight and balance or operating limitation changes shall be entered in the appropriate aircraft record. An alteration must be
compatible with all previous alterations to assure continued conformity with the applicable airworthiness requirements.
8. Description of Work Accomplished
(If more space is required, attach additional sheets. Identify with aircraft nationality and registration mark and date work completed.)
Nationality and Registration Mark Date
Additional Sheets Are Attached
FAA Form 337 (10-06)
N114AZ MARCH 26, 2002
1. Removed right wing from aircraft and removed skin from
outer 6 feet. Repaired buckled spar 49 inches from tip
in accordance with attached photographs and figure 1 of
drawing dated March 23, 2002.
Date: March 26, 2002, inspected splice in Item 1 and
found it to be in accordance with data indicated. Splice
is okay to cover. Inspected internal wing assembly for
hidden damage and condition.
Ed Mechanic, A&P 233346566 IA
2. Primed interior wing structure and replaced skin P/N’s
63-0085, 63-0086, and 63-00878 with same skin 2024-T3,
.025 inches thick. Rivet size and spacing all the same as
original and using procedures in Chapter 2, Section 3,
of AC 43.13-1B CHG 1, dated 2001.
3. Replaced stringers as required and installed 6 splices
as per attached drawing and photographs.
4. Installed wing, rigged aileron, and operationally
checked in accordance with manufacturer’s maintenance
manual.
5. No change in weight or balance.
END
Ed Mechanic
SAMPLE
Plane Sense
8
8-8
Chapter 8: Aircraft Maintenance Records
A
n Airworthiness Directive (AD) is an important tool used by the Federal Aviation
Administration (FAA) to communicate unsafe operating conditions relating to aircraft
and aircraft equipment to aircraft owners. A primary safety function of the FAA is to require
the correction of unsafe conditions found in an aircraft, aircraft engine, propeller, rotor, or
appliance when such conditions exist or are likely to exist or develop in other products of the
same design. These unsafe conditions can exist because of a design defect, maintenance, or
other causes.
Title 14 of the Code of Federal Regulations (14 CFR) Part 39, Airworthiness Directives, defines
the authority and responsibility of the Administrator in requiring the necessary corrective
action to address unsafe conditions. ADs are used to notify aircraft owners and other interested
persons of unsafe conditions and to specify the conditions under which the product may
continue to be operated.
types of Ads issued
The FAA issues two categories of ADs:
• Normal Issue
• Emergency Issue
standard Ad Process
The standard AD process is to issue a Notice of Proposed Rulemaking (NPRM), followed by
a Final Rule. After an unsafe condition is discovered, a proposed solution is published in the
Federal Register as an NPRM, which solicits public comment on the proposed action. After the
comment period closes, the final rule is prepared, taking into account all substantive comments
received, with the rule perhaps being changed as warranted by the comments. The preamble
to the Final Rule AD provides response to the substantive comments or states there were no
comments received.
emergency Ad
In certain cases, the critical nature of an unsafe condition may warrant the immediate adoption
of a rule without prior notice and solicitation of comments. The intent of an Emergency AD
is to rapidly correct an urgent safety of flight situation. This is an exception to the standard
process. If time by which the terminating action must be accomplished is too short to allow for
public comment (that is, less than 60 days), then a finding of impracticability is justified for
the terminating action, and it can be issued as an immediately adopted rule. The immediately
adopted rule will be published in the Federal Register with a request for comments. The Final
Rule AD may be changed later if substantive comments are received.
9
Airworthiness directives
1
EMERGENCY AIRWORTHINESS DIRECTIVE
Aircraft Certification Service
Washington, DC
U.S. Department
of Transportation
Federal Aviation
Administration
We post Emergency ADs on the intern et at www.faa.gov/aircraft/safety/alerts.
DATE: March 12, 2008
AD #: 2008-06-51
This emergency airworthiness directive (AD) 2008-06-51 is sent to all owners and operators
of Lycoming Engines IO, (L)IO, TIO, (L)TIO, AEIO , AIO, IGO, IVO, and HIO series reciprocating
　
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