The concern sheetOCR
This is OCR from the scanned FAA concern sheet. OCR can misread letters and numbers.
SEA ANATO Airworthiness VSTRATIOF Concern Sheet Date: 12/22/2009 Full Name: David Hirt Make, Model, Series, Serial No.:
Title: Aerospace Engineer Organization: Continued Operational Safety Small airplanes certified in any category Department: ACE-113 Address: 901 Locust St.
Kansas City, MO 64106:
Telephone Number: 816-329-4050 E-mail: david.hirt@faa.gov FAA Description of Airworthiness Concern Reason for Airworthiness Concern:
High pressure oxygen cylinders manufactured without the required strength may rupture while in service Approximately 325 high pressure gaseous oxygen cylinders were manufactured with insufficient strength characteristics due to improper heat treatment and may be in use on small airplanes. The effected oxygen cylinders are USDOT Type 3HT-1850 with a capacity of 115 cubic feet and were distributed by AVOX Systems Inc. and B/E Aerospace. AVOX and B/E Aerospace have prepared service information which identifies the affected cylinders by serial number.
Note: In transport category airplanes this safety concern is addressed by AD 2009-21-10, effective December 17, 2009.
Request for Information The FAA is soliciting additional information from Associations and Type Clubs in accordance with the Small Airplane Directorate AD Manual Supplement. Any additional information such as service problems, proposed alternate inspection/repair procedures, cost impact, etc. should be returned in writing to the FAA (address listed above). All comments or replies need to be as detailed as possible and include specific examples to illustrate the comments/concerns.
Attachments: *SDR(s) *A/ID *SLS *FAASR/*NTSBSR *AD • *AMOC L 1 *RA | Notification: FAA *AOPA *EAA Type Club *TC Holder Other:
Response Requested on_01/22/2010 : Emergency (10 days) Alert (30 days) Information (90 days) (to select a check box, double click on check box and select "Checked" in the Default value) * 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) This Airworthiness Concern Sheet (ACS) is intended as a means for FAA Aviation Safety Engineers to coordinate airworthiness concerns with aircraft owner/operators through associations and type clubs. At this time. the FAA has not made a determination on what type of corrective action (if any) should be taken. The resolution of this airworthiness concern could involve an AD action or an SAIB, or the FAA could determine that no action is needed at this time. The FAA's final determination will depend in part on the information received in response to this ACS.
The FAA endorses dissemination of this technical information to all manufacturers and requests association and type clubs comments:
Small Airplane Directorate U.S. Department 901 Locust, Room 301 of Transportation Kansas City, Missouri 64106 Federal Aviation Administration DEC 2 2 2009 Rob Hackman, Senior Director of Regulatory Affairs Aircraft Owners and Pilots Association 421 Aviation Way Frederick, Maryland 21701 Dear Mr. Hackman:
Enclosed is an Airworthiness Concern Sheet (ACS). The ACS is intended for Federal Aviation Administration (FAA) Aviation Safety Engineers to convey known airworthiness (A/W) concerns to aircraft owner/operators through associations and type clubs. The FAA endorses the dissemination of this information. We request that you distribute this A/W concern to your membership for technical and economic impact comments.
At this time, the FAA Small Airplane Directorate has not made a determination on what type of corrective action (if any) should be taken. The resolution of this airworthiness concern could involve an AD action or an SAIB, or the FAA could determine that no action is needed at this time. The FAA's final determination will depend in part on the information received in response to this Airworthiness Concern Sheet.
Please provide your association comments to this office within 30 days. If you have any questions, please contact David Hirt at (816) 329-4050, (e-mail address, david.hirt@faa.gov).
Sincerely, I are h. She David R. Showers Manager, Continued Operational Safety Small Airplane Directorate Enclosure
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12-21-09
AIRCRAFT OWNERS AND PILOTS ASSOCIATION AOPA 421 Aviation Way • Frederick, MD 21701-4798 Telephone (301) 695-2000 • FAX (301) 695-2375 www.aopa.org January 8, 2010 Mr. David Hirt Acrospace Engineer Continued Operational Safety Dept. ACE-113 901 Locust Street Kansas City, MO 64106 RE: Airworthiness Concern Sheet - Small airplanes high pressure oxygen cylinders Dear Mr. Hirt:
This letter is to acknowledge receipt of your Airworthiness Concern Sheet (ACS) on Small airplanes certified in any category for high pressure oxygen cylinders manufactured without the required strength may rupture while in service dated December 22, 2009. AOPA distributed the ACS to appropriate aircraft type clubs for their input.
AOPA understands the importance of the speedy processing of airworthiness concerns and appreciates your efforts to solicit input from industry before proceeding with airworthiness action. AOPA has no comments regarding this particular concern.
Thank you for your time and consideration, and we look forward to working with you again on future Airworthiness Concerns.
Sincerely, Leisha Bell Regulatory and Certification Policy
Cessna Pilots | Association ВІДІ 934 089)
PA MO PAS To: David Hirt January 21, 2010 Aerospace Engineer ACE-113 901 Locust St.
Kansas City, MO 64106 From: Tom Carr Technical Representative Cessna Pilots Association 3940 Mitchell Road Santa Maria, CA 93455 Cessna Pilots Association Comments to ACS Dated 12/22.2009 High pressure oxygen cylinders manufactured without the required strength may rupture while in service Dear Mr. Hirt Cessna Pilots Association (CPA) has received no comments from the membership on the Airworthiness Concern Sheet (ACS). CPA did not feel getting no comments was unusual due to the application of that size bottle to the Cessna fleet. More details on that fact will be given later in this reply. CPA feels the concept of an oxygen bottle rupturing is unacceptable and feels mandatory compliance is required. After reading through AD2009-21-10 a comment CPA has is, can the date range of production and when those bad cylinders could have been placed in service be listed since that would be very helpful tor an owner to determine if one of the suspect bottles was actually installed. Since the serial numbers of the affected bottles are listed it should not be that difficult to determine the calendar dates when those bottles were produced.
For transport aircraft a 115 cubic feet bottle maybe common place. For general aviation airplanes and specifically the Cessna models that size bottle is a rarity. Only the Cessna 404 and 402C models might have that size bottle installed from the factory. Might be installed is key here since that 115 cubic feet oxygen was an option installation not the standard size oxygen bottle installation. CPA feels some due diligence from the FAA would be needed so that any mandatory action it proposes would not have to be carried out on the entire Cessna fleet since only two models could have that size bottle installed.
Respectively submitted Tom Carr Technical Representative Cessna Pilots Association
Small Airplane Directorate U.S. Department 901 Locust, Room 301 of Transportation Kansas City, Missouri 64106 Federal Aviation Administration DEC 3 2 2000 Earl Lawrence, Vice President of Industry and Regulatory Affairs Experimental Aircraft Association 3000 Poberezny Rd Oshkosh, WI 54902 Dear Mr. Lawrence:
Enclosed is an Airworthiness Concern Sheet (ACS). The ACS is intended for Federal Aviation Administration (FAA) Aviation Safety Engineers to convey known airworthiness (A/W) concerns to aircraft owner/operators through associations and type clubs. The FAA endorses the dissemination of this information. We request that you distribute this A/W concern to your membership for technical and economic impact comments.
At this time, the FAA Small Airplane Directorate has not made a determination on what type of corrective action (if any) should be taken. The resolution of this airworthiness concern could involve an AD action or an SAIB, or the FAA could determine that no action is needed at this time. The FAA's final determination will depend in part on the information received in response to this Airworthiness Concern Sheet.
Please provide your association comments to this office within 30 days. If you have any questions, please contact David Hirt at (816) 329-4050, (e-mail address, david.hirt@faa.gov).
Sincerely, Saw R. Sheer David R. Showers Manager, Continued Operational Safety Small Airplane Directorate Enclosure
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12-21-09