The concern sheetOCR
This is OCR from the scanned FAA concern sheet. OCR can misread letters and numbers.
Airworthiness FAA Concern Sheet Date: 01/29/2007 Matt Wilbanks Make, Model, Series, Serial No.:
Aerospace Engineer Ag-Cat Model G-164 Series (all G-164 series aircraft), certificated in Airplane Certification Office any category, retrofitted with 3/4-86-6-RT-6 (A3580-1) Gemini fuel ASW-150 shut-off valves.
2601 Meacham Blvd Reason for Airworthiness Concern:
Fort Worth, TX -761374298 Potential loss of power resulting from inadvertent placement of fuel
(817) 222-5051 selector to unplacarded "OFF" position.
Matt. Wilbanks(@faa.gov FAA Description of Airworthiness Concern (Who, What, Where, When, How? Attachments: RA and appropriate data) Airworthiness Directive 82-07-04, Amendment 39-4355 was issued to assure a positive stop of the fuel shut-off valve at the "ON" position. The AD was accomplished by incorporating Ag-Cat Service Bulletin Number 78 dated January 26, 1982. A recent FAA Safety Recommendation determined that the fuel shut-off valve referenced in the AD could potentially be installed on aircraft that were not originally listed in the applicability section of the AD.
The FAA is considering an expansion of the AD applicability section to include all G-164 Series aircraft that have been retrofitted with the 3/4-86-6-RT-6 (A3580-1) Gemini fuel shut-off valve.
An initial Risk Assessment was performed and determined this Airworhiness Concern to be classified as a Potential Routine AD.
Request for Information (Proposed Alternate Inspection/Repair Procedures, Cost Impact, Ete. Note: Any comments or replies to the FAA need to be as specifie as possible. Please provide specific examples to illustrate your comments/concerns.):
The FAA is interested in determining the number of aircraft potentially affected, the associated costs and the man hours involved with correcting the fuel shut-off valve issue.
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.
Attachments: *SDR(s) • *A/IDS • *SL(s) • *SAIB • *FAASR/*NTSBSR • *AD D*AMO • *RA X Notification: FAA • *AOPA Z *EAA • Type Club X *TC Holder X Other: NAAA Response Requested: 2/28/2007 Emergency (10 days) •Alert (30 days) X Information (90 days) - (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) Revised 1/24/02