2002-21-51: Main gear box (MGB) lubrication pump
Emergency order 2002-21-51 is an airworthiness directive. The FAA's subject line: Main gear box (MGB) lubrication pump. It names Aerospatiale AS-355, Airbus Helicopters AS355 TwinStar: about 29 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: landing gear.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France; Eurocopter France
- Models
- AS355E, AS355F, AS355F1, AS355F2, AS355N
- On this site
- Aerospatiale AS-355 23 registered
Airbus Helicopters AS355 TwinStar 6 registered
Dates and paperwork
- Docket
- 2002-SW-48-AD
- Replaced by
- 2002-21-51, 2003-21-09
- Status
- Historical
- The FAA's document
- Read the order on the FAA's site
Related safety bulletins advice on the same designs, not orders
2014-11-25SW-15-04 · Cabin Ventilation Air Scoop Draining
2011-05-16SW-11-33 · Eurocopter France Model AS 355 Helicopters; Main Gearbox Cowling Lock Improvement
2010-12-20SW-11-07 · Star Flex Arm Failures on Eurocopter France Model AS350, AS355, and EC130 Helicopters
2007-04-03SW-07-22R1 · Serrated lock washers
2004-12-02SW-05-20 ·
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/2002-21-51.json · aircraft systems.