Aircraft
Certification Service Washington, DC U.S. Department of Transportation Federal Aviation Administration
CE-18-11
February 9, 2018
This is information only. Recommendations
aren’t mandatory.
Introduction
This Special Airworthiness Information Bulletin (SAIB) informs
registered owners/operators of M7 Aerospace LLC Models
SA226-AT/-TC/-T(B)/T and SA227-AC(C-26A)/-AT/-BC(C-26A)/-CC/-DC(C-26B)
/-TT airplanes (under Type Certificate Data Sheets A5SW, A8SW, and
A18SW) of an airworthiness concern. Specifically, this SAIB provides
inspection procedures and on-condition maintenance actions for the
elevator quadrant bearing and bore of the affected airplanes.
At this time, the FAA has determined that this airworthiness concern is
not an unsafe condition that would warrant airworthiness directive (AD)
action under Title 14 of the Code of Federal Regulations (14 CFR) part
39.
Background
M7 Aerospace LLC recently issued SA226/SA227 series Service Bulletins
(SB) 226-27-082 IR, 227-27-062 IR, and CC-27-034 IR, all dated November
28, 2016. The SBs were issued after an operator reported excessive
corrosion on the elevator quadrant bearings and inside the quadrant
bores. The SBs specify procedures for removing the elevator quadrants
for initial and periodic visual inspections for corrosion of the
quadrant and bearings, provide rework limits for removing corrosion
from the quadrant bearing bores, and provide instructions to check for
cracking that may be initiated by corrosion.
Recommendations
The FAA recommends inspecting and replacing (when required) the
quadrants if corrosion is beyond the limits of the service bulletins or
if cracks are found on M7 Aerospace LLC SA226 and SA227 (specific
models referenced above) airplanes using the procedures in the
above-referenced service bulletins, as applicable. The FAA also
requests operators voluntarily report instances of corrosion on
elevator quadrant bores or bearings to the FAA contact listed below.
A federal agency may not conduct or sponsor, and a person is not
required to respond to, nor shall a person be subject to a penalty for
failure to comply with a collection of information subject to the
requirements of the Paperwork Reduction Act unless that collection of
information displays a current valid OMB Control Number. Under the
provision of the Paperwork Reduction Act (44 U.S.C 3501 et seq.), the
OMB has approved the information collection contained in this SAIB, and
assigned OMB Control Number 2120-0731. Public reporting for this
collection of information is estimated to be approximately 5 minutes
per response, including the time for reviewing instructions, searching
existing data sources, gathering and maintaining the data needed,
completing and reviewing the collection of information. All responses
to this collection of information are voluntary. Send comments
regarding this burden estimate or any other aspect of this collection
of information, including suggestions for reducing this burden to the
FAA at: 800 Independence Ave. SW, Washington, DC 20591, Attn:
Information Collection Clearance Officer, ASP-110.
For Further Information Contact
John Turner, Aerospace Engineer, AIR-7F1, Fort Worth ACO Branch, 10101
Hillwood Pkwy, Fort Worth, TX 76177; phone: (817) 222-4508; e-mail:
john.r.turner@faa.gov.
For Related Service Information Contact