SDR 97ZZZX3742

Service difficulty report · Hose Assy · Tmpson NAVIONA

Difficulty date
June 1, 1997
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N4339K
Make and model
Tmpson NAVIONA
Aircraft serial
NAV41339
Part
Hose Assy
Part number
75685
Condition
Deteriorated
Location
Fuel Pump
Part time
3,481 hours
Component
Adel · 19372
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING AN ANNUAL INSPECTION, THE RUBBER HOSE ASSEMBLY PROVIDING FUEL TO THE ELECTRIC FUEL PUMP WAS REMOVED. THE RUBBER HOSE STOCK WAS EXTREMELY FRAYED BY BOTH SOCKETS. THE WIRE SUPPORT WINDING WAS UNWOUND AND PROTRUDING. THE IDENTIFICATION TAG SHOWED THE ASSEMBLY DATE AS 1/47. THIS HOSE ASSEMBLY WAS ORIGINAL EQUIPMENT ON THIS AIRCRAFT AND SHOULD HAVE BEEN REPLACED YEARS AGO. THE HOSE ASSEMBLY IS ALMOST IMPOSSIBLE TO SEE WHEN INSTALLED. SEE NAVION PARTS CATALOG, 4TH RYAN EDITION, FIGURE 18, INDEX 50. WHILE IT WAS NOT YET LEAKING, SUBMITTER STATED THE DANGEROUS SITUATION THIS HOSE ASSEMBLY CREATED UNDERSCORES THE IMPORTANCE OF INSPECTING AND REPLACING THOSE ASSEMBLIES.