EASA Regulations for Air Tractor AT-401

2 airworthiness directives and regulatory documents affecting Air Tractor AT-401.

EASA SIB SAFO15007

Pratt & Whitney R-985 (Wasp Junior) Engines — Flyweight Hardware Failures

SAFO 15007 is a Safety Alert for Operators issued by the FAA regarding Pratt & Whitney R-985-AN-14B (Wasp Junior) engines. It addresses failures caused by fatigued flyweight screws and improperly modified or under-torqued expanders, which have led to in-flight engine failures and forced landings. The alert also applies to other Pratt & Whitney Wasp Jr (R-985 Series) and Wasp (R-1340 Series) engines used in various aircraft including Air Tractor AT-301 and 401, Ayres Thrush, Beechcraft D17 and 18 series, Boeing-Stearman 75, de Havilland DHC-2 and DHC-3, Gee Bee, Grumman G-21 and G-164, Howard DGA-6, -11, -15, North American T-6, and Weatherly 201 and 620.

Jul 15, 2015

Safety Information BulletinMaintenanceSafety MgmtAir Tractor AT-301Air Tractor AT-401Ayres ThrushBeechcraft D17Beechcraft 18Boeing-Stearman 75de Havilland DHC-2de Havilland DHC-3Gee BeeGrumman G-21Grumman G-164Howard DGA-6Howard DGA-11Howard DGA-15North American T-6Weatherly 201Weatherly 620

EASA SIB CE-11-41

Air Tractor, Inc. AT-300, AT-400 and AT-500 Series - Fuselage-to-Wing Attachment Fittings

The Air Tractor, Inc. AT-300, AT-400 and AT-500 Series - Fuselage-to-Wing Attachment Fittings Special Airworthiness Information Bulletin (SAIB: CE-11-41) informs owners and operators of Air Tractor AT-300, AT-400, and AT-500 series aircraft about potential fatigue cracking in the fuselage frame wing attach tubes. This bulletin covers models including AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, and AT-504. It provides inspection guidance but does not mandate regulatory action.

Jul 4, 2011

Safety Information BulletinMaintenanceSafety MgmtAir Tractor AT-300Air Tractor AT-301Air Tractor AT-302Air Tractor AT-400Air Tractor AT-400AAir Tractor AT-401Air Tractor AT-401AAir Tractor AT-401BAir Tractor AT-402Air Tractor AT-402AAir Tractor AT-402BAir Tractor AT-501Air Tractor AT-502Air Tractor AT-502AAir Tractor AT-502BAir Tractor AT-503Air Tractor AT-503AAir Tractor AT-504