Summary of Airframe ADs

Updated: January 10, 1999


DISCLAIMER: This AD summary is provided to help owners and prospective owners assess the status of their aircraft's logs. It is in no way intended to serve as an AD search for purposes of aircraft maintenance or inspection.

Airframe ADs for 17-30, -31, and -31TC Aircraft (Type Certificate 1A3):

(Click on AD number to view actual AD text)


 68-23-08 Requires a modification to the elevator trim tab.
AFFECTED MODELS: 17-30s S/N 30001-30151.

 69-12-04 A Recurring inspection of the stabilizer strut clevises. AD is satisfied by fitting redesigned clevises P/N 193130.
AFFECTED MODELS: 17-30s S/N 30001-30164.

 71-10-01 Requires compliance with Bellanca Service Letter 64 and the installation of a drain for the fuel boost pump.
AFFECTED MODELS: 17-30s S/N 30002-30216.

 72-01-01 Calls for repetitive 100 hour inspections of the engine flex hose assemblies, until the time hoses are replaced with hose material that meets TSO-C53a Type C.
AFFECTED MODELS: 17-30s S/N 30001-30262.

 72-13-03 Calls for replacement of the fuel boost pump switch, modifying the electrical circuit, and installing a placard.
AFFECTED MODELS: 17-30s ALL.

 75-11-06 Is a 'one time' directive that calls for modifying the check valve in the vapor return line. It applies to Lycoming powered aircraft only.
AFFECTED MODELS: 17-31 S/N 32-1; 17-31TCs ALL.

75-20-06 Calls for a 100 hour repetitive inspection of the vertical tubes in the tail. Service kit SK1234789-0004 can be installed to satisfy the AD and eliminate the inspections.
AFFECTED MODELS: ALL

 76-08-04 The infamous 'wood deterioration' AD. It calls for a thorough inspection for any wood decay. Inspections to be done at every annual.
AFFECTED MODELS: ALL

 76-23-03R1 This is a recurring inspection of the exhaust ball flanges, and in my opinion the most important AD on a Viking. It should be performed properly and thoroughly to prevent a fire hazard.
AFFECTED MODELS: 17-30s S/N 30139-30262; 17-31s S/N 32-1 through 32-14.

 77-22-02 Is a 100 hour recurring inspection of the nose landing gear engine mount (P/N 191106, 191898). Bellanca service kit SK1267-4019 can be installed to eliminate the inspections and satisfy the AD.
AFFECTED MODELS: 17-30s S/N 30001-30262.

 86-25-06 AD to assure all the wing fuel tanks have sump drains.
AFFECTED MODELS: ALL

 87-11-01R1 This is a recurring inspection (at annual) of the fuel caps and fuel scupper drains around the filler necks to assure no water can enter the tanks.
AFFECTED MODELS: ALL

 90-02-17 A recurring inspection of the main landing gear 'drag strut attach brackets' that can be satisfied by fitting stronger brackets; P/Ns 194153-30 & 194153-40.
AFFECTED MODELS: ALL

 96-18-07 A recurring inspection of the nose landing gear 'drag strut brackets' that can be satisfied by following service letter SL B-107 and fitting a new bracket P/N 194650-0.
AFFECTED MODELS: 17-30s S/N 30123-30262; 17-31s S/N 32-1 through 32-14; 17-31TCs S/N 31001-31003.


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