The concern sheetOCR
This is OCR from the scanned FAA concern sheet. OCR can misread letters and numbers.
APPENDIX II Airworthiness FAA Concern Sheet (Initiated by FAA Office) Date: 06/08/2007 Make, Model, Series, Serial No.: Cessna Models 525/525A/ T. N. Baktha 525B.
Aerospace Engineer (Please see the Cessna Alert Service Letter for airplane serial Federal Aviation Administration Nos. affected - attached here with) Department of Transportation 1801 Airport Road Wichita KS 67209 316/946-4155; t.n.baktha@faa.gov Reason for Airworthiness Concern: Cessna 525 CJ models, use of relief tube can cause corrosion of the fuselage skins, fairing, fairing support structure, and wing structure.
FAA Description of Airworthiness Concern Please see the description in the attached ASL525-53-04 Rev 1 in the next page.
Comments:
FAA requests your comments to T.N. Baktha. (The address is in the box above).
Notification:
Please make your comments pertaining only to this Airworthiness Concern Sheet.
To:
Cessna Pilots Association, Cessna Aircraft Company, ACE 113 Small Airplane Directorate Subject: Airworthiness Concern Sheet concerning Cessna Models 525 CJ series.
Cessna Aircraft Company has released a Mandatory Alert Service Letter ASL525-53-04 Rev.1 dated April 03, 2007 to prevent the use of the relief tube which, if used, could cause corrosion of the fuselage skins, fairings, fairing support structure, and wing structure. If the corrosion becomes extensive, it could cause stiffness degradation of the structure and could lead to catastrophic structural failure and thus fatal accidents. The details of the Models and serial no's are given in the attached pdf file in the Cessna ASL to this email.
The ACS is intended for Federal Aviation Administration (FAA) Aircraft Certification Office (ACO) Safety Engineers to convey known airworthiness (A/W) concerns to the aircraft owners/operators through Associations and Type Clubs. We request that you distribute this A/W concern to your membership for comments on technical and economic impact, if this Alert Service Letter is mandated by an Airworthiness Directive (AD).
Please provide your comments to this office by 08/10/2007. If you have any questions, please contact T.N. Baktha at (316) 946-4155, or email to: t.n.baktha@faa.gov Attachments: *SDR(s) *A/IDS *SL(s) X *SAIB *FAASR/*NTSBSR] *AD[ *AMOC *RE Notification: FAA X *AOPA X*EAA Type Club *TC Holder X Other: X Response Date Requested _08/10/07_: Emergency (10 days) L Alert (30 days) Information (90 days) XL (Space Bar Adds #X" to Check Boxes) *Service Difficulty Reports (SDRs); Accident/Incident Data System (A/IDS); Service Letter (SL); Special Airworthiness Information Bulletin (SAIB):
Federal Aviation Administration (FAA)/National Transportation Safety Board (NTSB) Safety Recommendation (FAASR/NTSBSR); Airworthiness Directive (AD); Alternate Method of Compliance (AMOC); Risk Assessment (RA); Aircraft Owners & Pilots Association (AOPA):
Experimental Aircraft Association (EAA); Type Certificate (TC)