Chapter 10: Service Difficulty Program 10-3 Figure 10-1.  FAA Form 8010-4, Malfunction or Defect Report.  You can obtain instructions for completing  FAA Form 8010-4 on the FAA website at www.faa.gov or from your local FSDO. During a local flight, a fuel odor was apparent. Flight was terminated at the  local airport with a normal landing.  After engine shutdown and exiting the  aircraft the pilot observed fuel leaking  from the lower engine cowl. Investiga- tion revealed an aluminum fuel pressure  gauge line cracked at the B nut where  it attached to a carburetor fitting (see  attached drawing). Line appears to be  original (40+ yrs.). A combination of age  and vibration may have caused the crack. Recommend checking line every 100 hrs. and replacing as necessary. N404DH D-3311 Beechcraft C-35 Continental E-225 30904 Hartzell HCA2U20 AK-710 4A1 Tube-fuel 35-924126 N/A B-nut pressure  Carb end N/A David Waterski 405 555 4316 N/A N/A N/A N/A 4100 4-28-05 Cracked SAMPL E 10