COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Embraer EMB-110 (Bandeirante) Series Aeroplanes
AD/EMB-110/13
Amdt 6
Rudder Upper Hinge Support 12/91
Applicability: All models S/Nos 110001 to 110141; 110143 to 110146; 110148 to 110149, 110152,
110153, 110156, 110157, 110160, 110161, 110164, 110165; 110168 to 110170;
110172 to 110178; 110180, 110181, 110183, 110184, 110186, 110187, 110189,
110190; 110192 to 110359; and 110361 to 110480 inclusive. Requirement: 1. Action in accordance with Embraer SB 110-055-0017 Rev 3.
2 (a) With the rudder removed from the aircraft, perform a dye penetrant inspection of the rudder upper hinge bracket, P/N 4A-3441, paying particular attention to the areas under and around the bolt supporting flange, or
2 (b) With the rudder in situ, perform a detailed visual inspection of both parts of the rudder upper hinge bracket P/N 4A-3441, paying particular attention to the areas under and around the bolt supporting flange.
Compliance: For Requirement 1:
Part I - Unless already accomplished, within 300 hours time in service after 7 June 1989.
Part II - Within 300 hours time in service after 7 June 1989, and thereafter at each C type inspection; until modified in accordance with Part III of the Requirement document.
For Requirement 2 (a):
Within 600 hours time in service after 27 December 1990, and thereafter at each C type inspection.
For Requirement 2 (b):
Within 300 hours time in service after 11 July 1991, and thereafter at each B2 type inspection.
The compliance times of the previous issue of this Directive are as stated. This amendment is effective from 12 December 1991.
Background: Cracks in the rudder upper hinge support structure have been reported to the manufacturer. Amendment 3 was the result of further cracking due to rudder installation problems and also extended the periodicity.
Amendment 4 introduced an inspection of the rudder upper hinge brackets following three local reports of cracking.
Amendment 5 was issued to correct anomalies in Requirement and Background information, and introduce an alternative visual inspection for Requirement 2 (b).
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Amendment 6 aligns the repeat inspection interval with existing scheduled inspections to include 5% tolerance on inspection intervals.