Airworthiness Directive 97-14-01

recurring
Official AD 97-14-01 · FR doc 97-17098 · 1997-07-02 · airframe

Airworthiness Directives; Pilatus Britten-Norman Ltd. BN-2A and BN-2A Mk 111 Series Airplanes

What this AD requires

This amendment supersedes Airworthiness Directive (AD) 75-24- 07 R1, which currently requires repetitively inspecting the left-hand (LH) rudder bar assembly for cracks and loose fasteners on certain Pilatus Britten-Norman Ltd. BN-2A and BN-2A Mk 111 series airplanes, and replacing any cracked part. The superseding action requires inspecting the LH rudder bar assembly and determining the wall thickness of the slider tube unit. This action also would require modifying the rudder bar assembly by replacing the LH slider tube with a new strengthened slider tube unit as terminating action for the repetitive inspections currently required by AD 75-24-07 R1. The development of a modification to the rudder bar assembly, which terminates the repetitive inspections required by AD 75-24-07 R1, prompted this AD. The actions specified by this AD are intended to prevent failure of the pilot's rudder bar assembly, which could result in loss of control of the airplane during landing operations.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 97-14-01 applies to

MakesPilatus Britten-Norman Ltd.
ModelsBN-2
Part-conditionalNB-45-A1-2975.

LH rudder bar assembly crack inspection (dye penetrant) and slider-tube gauge measurement per PBN SB No. BN-2/SB.111 (Oct 25 1977) and BN-2/SB.56 (Feb 13 1978); repetitive interval depends on slider tube gauge (500 landings for 17-gauge/.056in, 250 landings for 20-gauge/.036in). Installing strengthened slider tube unit P/N NB-45-A1-2975 (Modification NB/M/948) terminates the repetitive inspection.

Whether AD 97-14-01 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of complianceThe specific action taken (inspected, replaced, modified) and to what revision.
DateWhen the work was done.
Aircraft timeTotal time in service / tach at compliance — how recurring next-due is computed.
Signature & certificateThe A&P/IA who returned it to service, with certificate number.
Is AD 97-14-01 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.