The concern sheet
Text extracted from the PDF.
Revised 1/24/02 Airworthiness Concern Sheet
Jeff Pretz Aerospace Engineer FAA ACE-116Wp Aircraft Certification Office 1801 Airport Road Room 100 Wichita KS 67209 316-946-4153 jeff.pretz@faa.gov Make, Model, Series, Serial No.: Hawker Beechcraft, Bonanza G36, Serial E-3630, E3636 through E-3817, E-3819 through E- 3834, E-3836 through E-3887, E-3889 through E-3896, E-3898 and E-3899 Reason for Airworthiness Concern: Contact between fuel line and electrical components located behind the instrument panel may cause damage to the fuel line resulting in leakage and possible fire within the cabin.
Date: June 5, 2009 FAA Description of Airworthiness Concern (Who, What, Where, When, How? Attachments: RA and appropriate data)
Hawker Beechcraft Corporation (HBC) has recently reported to the FAA two possible events of chafing between electrical wiring/connector P60 (P/N 207020-1) and fuel line (P/N 36-920001-13). Both the fuel line and wire harness are located behind the instrument panel on the pilots side. One aircraft with 71 hours total time was found to have the P60 connector in contact with the fuel line with no apparent damage. Another aircraft with 217 total hours reported the insulation on one of the wires connected to the P60 connector chafed through allowing the wire to contact the fuel tube. Arcing between the wire and fuel tube created a small hole causing partial loss of engine power during takeoff. Engine power was restored by activation of the electric boost pump and the pilot made a normal landing and no fire was reported.
Request for Information (Proposed Alternate Inspection/Repair Procedures, Cost Impact, Etc. Note: Any comments or replies to the FAA need to be as specific as possible. Please provide specific examples to illustrate your comments/concerns.): HBC issued Safety Communiqué No 303 in April 2009 to advise all owners of affected aircraft of the potential for chafing in the noted area. HBC is in the process of releasing a Mandatory Service Bulletin to inspect the area for damage, verify anti-chafing insulation is correctly installed and located on the subject fuel line, and ensure the P60 connector and associated wire harness is adequately secured at least ½ inch away from the fuel line. Due to the potential for both loss of engine power and fire behind the instrument panel, the FAA is considering mandatory action to complete the HBC Mandatory Service Bulletin. The cost associated with this Bulletin will likely be covered by HBC warranty, but if not would be minimal to the owner if damage has not occurred. If damage has occurred, additional costs associated with replacing the fuel line and repairing the wire harness may be required.
Attachments: *SDR(s) *A/IDS *SL(s) *SAIB *FAASR/*NTSBSR *AD *AMOC *RAX
Notification: FAA X *AOPA X *EAA Type Club X *TC Holder X Other:
Response Requested 06/22/09: Emergency (10 days) X Alert (30 days) 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)