Summary of Airframe ADs

Updated: December 27, 1998

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 17-30A, -31A, and -31ATC Aircraft (Type Certificate A18CE):

(Click on AD number to view actual AD text)

72-01-03 Is a 'one time' fuel hose replacement.
AFFECTED MODELS: 17-30As S/N 30394-30403, and 30405; 17-31A S/N 32-53; and 17-31ATCs S/N 31022-31025.

73-03-03 Is a 'one time' replacement of the air induction box bolts on Continental powered aircraft.
AFFECTED MODELS: 17-30As S/N 30263 through 73-30489.

73-05-02 Calls for 25 hour repetitive inspections or replacement of the rudder pedal shaft with a thicker walled tube. Once replaced the AD is satisfied.
AFFECTED MODELS: 17-30As S/N 30346 through 73-30496; 17-31As S/N 32-37 through 73-32-97.

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: 17-31As S/N 32-21 through 75-32-159; 17-31ATCs S/N 31004 through 75-31116.

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: 17-30As S/N 30263 through 76-30811; 17-31As S/N 32-15 through 76-32-163; 17-31ATCs S/N 30004, 31004 through 76-31124.

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: 17-30As S/N 30263 and on; 17-31As S/N 32-15 and on.

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: 17-30As S/N 30263 through 30853.

86-25-06 AD to assure all the wing fuel tanks have sump drains.
AFFECTED MODELS: 17-30As S/N 30263 through 30977; 17-31As S/N 32-15 through 32-172; 17-31ATCs S/N 31004 through 31155.

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: 17-30As 30263 through 89-301007; 17-31As S/N 32-15 through 78-32-172; 17-31ATCs S/N 31004 through 79-31155.

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: 17-30As S/N 30263 through 78-30905 (excluding 76-30824); 17-31As S/N 32-15 through 78-32172; 17-31ATCs S/N 31004 through 79-31155.

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