EASA Regulations for Boeing 737-900

37 airworthiness directives and regulations affecting Boeing 737-900.

EASA AD US-2020-01-11

Jan 21, 2020

Air Conditioning - Temperature Control Valve / Control Cabin Trim Air Modulating Valve - Replacement

Airworthiness Directive 2020-01-11 is a final rule issued by the Federal Aviation Administration (FAA) addressing certain Boeing 737-800, -900, and -900ER series airplanes. It mandates the replacement of the left temperature control valve and control cabin trim air modulating valve to prevent in-flight failures that could cause excessive temperatures in the flight deck or passenger cabin. This directive updates and expands the applicability of the previous AD 2017-12-07.

Airworthiness Directive
  • Boeing 737800900900ER

EASA AD 2020-0007

Jan 15, 2020

Engine — Rotating Air High Pressure Turbine Front Seal — Replacement

EASA Airworthiness Directive 2020-0007 is a regulatory document addressing the replacement of rotating air high pressure turbine (HPT) front seals on CFM International CFM56-5B, CFM56-5C, and CFM56-7B engines. These engines are installed on various Airbus models including A318, A319, A320, A321, A340, and Boeing 737-600, 737-700, 737-800, and 737-900 aircraft. The directive mandates inspections and replacement of specific affected HPT front seals to prevent potential uncontained engine failures.

Airworthiness Directive
  • CFM International CFM56-5B
  • CFM International CFM56-5C
  • CFM International CFM56-7B
  • Airbus A318
  • Airbus A319
  • Airbus A320
  • Airbus A321
  • Airbus A340
  • Boeing 737-600
  • Boeing 737-700
  • Boeing 737-800
  • Boeing 737-900

EASA AD US-2019-22-10

Nov 13, 2019

Superseded by FAA AD 2021-09-06

FAA Airworthiness Directive 2019-22-10 is a final rule affecting all Boeing 737-600, -700, -700C, -800, -900, and -900ER series airplanes. It mandates expanded repetitive inspections for cracking in the left- and right-hand side outboard chords of frame fittings and failsafe straps at station 663.75, around eight fasteners adjacent to stringer S-18A straps. This directive addresses structural integrity concerns to prevent potential loss of airplane control.

Airworthiness Directive
  • Boeing 737600700700C800900900ER

EASA AD US-2019-20-02

Oct 3, 2019

Superseded by FAA AD 2019-22-10

FAA Airworthiness Directive 2019-20-02 is a final rule addressing all Boeing 737-600, -700, -700C, -800, -900, and -900ER series airplanes. It mandates repetitive inspections for cracking in the left and right side outboard chords of the station 663.75 frame fittings and failsafe straps adjacent to stringer S-18A straps, with required repairs if cracking is found. This directive aims to maintain structural integrity and prevent potential loss of airplane control.

Airworthiness Directive
  • Boeing 737600700700C800900900ER

EASA AD 2019-0150

Jun 28, 2019

Engine – Rotating Air High Pressure Turbine Front Seal – Replacement

EASA Airworthiness Directive 2019-0150 is an airworthiness directive addressing certain CFM International CFM56-5B, CFM56-5C, and CFM56-7B engines installed on various Airbus A318, A319, A320, A321, A340 and Boeing 737-600, 737-700, 737-800, and 737-900 aircraft. The directive mandates replacement of specific rotating air high pressure turbine (HPT) front seals identified by part numbers 1795M36P01 and 1795M36P02 due to risk of cracks leading to uncontained engine failure. It provides detailed affected serial numbers and compliance requirements for operators and maintenance organizations.

Airworthiness DirectiveSuperseded
  • CFM International CFM56-5B
  • CFM International CFM56-5C
  • CFM International CFM56-7B
  • Airbus A318
  • Airbus A319
  • Airbus A320
  • Airbus A321
  • Airbus A340
  • Boeing 737-600
  • Boeing 737-700
  • Boeing 737-800
  • Boeing 737-900

EASA AD 2019-0146

Jun 21, 2019

Engine – Rotating Air High Pressure Turbine Front Seal – Replacement

EASA Airworthiness Directive 2019-0146 is an airworthiness directive addressing certain CFM56-5B, CFM56-5C, and CFM56-7B engines installed on aircraft including Airbus A318, A319, A320, A321, A340 and Boeing 737-600, 737-700, 737-800, and 737-900. The directive focuses on the replacement of rotating air high pressure turbine (HPT) front seals that are susceptible to cracking if removed and re-installed on different HPT disks. It mandates specific inspections and replacements to ensure continued airworthiness and safe operation of affected engines.

Airworthiness DirectiveSuperseded
  • CFM International CFM56-5B
  • CFM International CFM56-5C
  • CFM International CFM56-7B
  • Airbus A318
  • Airbus A319
  • Airbus A320
  • Airbus A321
  • Airbus A340
  • Boeing 737-600
  • Boeing 737-700
  • Boeing 737-800
  • Boeing 737-900

EASA AD US-2019-11-06

Jun 14, 2019

Fuselage - Skin under the Drag Link Assembly - Inspection

Federal Aviation Administration Airworthiness Directive 2019-11-06 is a final rule addressing certain Boeing 737-600, -700, -700C, -800, -900, and -900ER series airplanes. It mandates repetitive inspections of the fuselage skin under the drag link assembly for cracks at specific fastener locations. The directive aims to ensure continued airworthiness by detecting and correcting skin cracks that could compromise structural integrity.

Airworthiness Directive
  • Boeing 737600700700C800900900ER

EASA AD US-2019-03-26

Apr 2, 2019

Superseded by FAA AD 2021-26-17

FAA Airworthiness Directive 2019-03-26 is a final rule addressing certain Boeing 737-600, -700, -700C, -800, -900, and -900ER series airplanes. It mandates modifications to passenger service units (PSUs) and life vest panels to prevent detachment during accidents by replacing and installing new lanyards and inspecting torsion spring assemblies. This directive aims to enhance passenger safety by ensuring PSUs remain securely attached during emergencies.

Airworthiness Directive
  • Boeing 737600700700C800900900ER

EASA AD US-2019-03-07

Mar 22, 2019

Wings - Krueger Flap Bullnose Attachment Hardware - Inspection

Airworthiness Directive 2019-03-07 is a final rule issued by the Federal Aviation Administration addressing The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. It mandates inspections of the Krueger flap bullnose attachment hardware to detect discrepancies and missing hardware that could cause the bullnose to detach during flight. The directive expands applicability to all airplanes with Krueger flap bullnose installations due to the rotable nature of the parts.

Airworthiness Directive
  • Boeing 737600700700C800900900ER

EASA AD US-2019-01-03

Mar 19, 2019

Landing Gear - Trunnion Pin Assemblies - Inspection / Lubrication / Replacement

The Federal Aviation Administration's Airworthiness Directive 2019-01-03 addresses inspection, lubrication, and replacement requirements for the forward and aft trunnion pin assemblies of the main landing gears on certain Boeing 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This directive updates previous requirements to include all affected airplanes and prohibits installation of certain landing gear components unless specific conditions are met. It aims to prevent corrosion and chrome damage that could lead to landing gear collapse.

Airworthiness Directive
  • Boeing 737600700700C800900900ER

EASA AD 2019-0018

Jan 30, 2019

Engine — Fan Blades — Inspection

EASA Airworthiness Directive 2019-0018 is an aviation safety regulation addressing the inspection of fan blades on CFM International CFM56-7B engines installed on Boeing 737-600, 737-700, 737-800, and 737-900 aircraft. The directive mandates ultrasonic inspections of specific fan blades to detect cracks and prevent fan blade failure. It applies to all serial numbers of multiple CFM56-7B engine variants and includes detailed definitions of affected and serviceable fan blades.

Airworthiness Directive
  • CFM International CFM56-7B
  • Boeing 737-600
  • Boeing 737-700
  • Boeing 737-800
  • Boeing 737-900

EASA AD US-2018-26-06

Jan 11, 2019

Doors - Main Landing Gear Center Door Assemblies - Inspection

Federal Aviation Administration Airworthiness Directive 2018-26-06 is a final rule addressing all Boeing 737-600, -700, -700C, -800, -900, and -900ER series airplanes. It mandates inspections of the main landing gear center door assemblies due to reports of loose, worn, or missing attachment bolts. The directive aims to ensure the structural integrity of the main landing gear doors to prevent potential damage and loss of airplane control.

Airworthiness Directive
  • Boeing 737600700700C800900900ER

EASA AD US-2018-23-09

Dec 12, 2018

Stabilizers - Horizontal Stabilizers - Inspection

Airworthiness Directive 2018-23-09 is a final rule issued by the Federal Aviation Administration addressing The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. It mandates inspections of horizontal stabilizers to detect cracks in the rear spar upper chord caused by galvanic corrosion due to a manufacturing oversight involving missing protective finishes on certain bushings.

Airworthiness Directive
  • Boeing 737600700700C800900900ER

EASA AD US-2018-20-24

Nov 16, 2018

Fuel - Maintenance or Inspection Program - Revision

The Federal Aviation Administration's Final Rule titled 'Fuel - Maintenance or Inspection Program - Revision' issues a new airworthiness directive (AD 2018-20-24) for certain Boeing 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This directive mandates revisions to the maintenance or inspection programs to incorporate updated airworthiness limitations related to fuel tank ignition prevention and the nitrogen generation system. The AD addresses unsafe conditions that could lead to fuel tank explosions or engine flameouts.

Airworthiness Directive
  • Boeing 737600700700C800900900ER

EASA AD 2018-0211

Sep 28, 2018

Engine – Fan Blades – Inspection

EASA Airworthiness Directive 2018-0211 addresses safety concerns for CFM International CFM56-7B engines installed on Boeing 737-600, 737-700, 737-800, and 737-900 aircraft. It mandates ultrasonic inspections of specific fan blades to detect cracks that could lead to fan blade failure and uncontained debris release. The directive applies to multiple CFM56-7B engine variants and affected fan blade part numbers.

Airworthiness DirectiveSuperseded
  • CFM International CFM56-7B
  • Boeing 737-600
  • Boeing 737-700
  • Boeing 737-800
  • Boeing 737-900

EASA AD 2018-0109

May 17, 2018

Engine – Fan Blades – Inspection

EASA Airworthiness Directive 2018-0109 is an airworthiness directive addressing fan blade inspections for CFM International CFM56-7B engines installed on Boeing 737-600, 737-700, 737-800, and 737-900 aircraft. It mandates ultrasonic inspections of specific affected fan blades to prevent potential fan blade failure and uncontained debris release. The directive applies to multiple CFM56-7B engine variants and specifies compliance procedures and corrective actions.

Airworthiness DirectiveSuperseded
  • CFM International CFM56-7B
  • Boeing 737-600
  • Boeing 737-700
  • Boeing 737-800
  • Boeing 737-900

EASA SIB 2008-47

May 26, 2008

FAA SAIB NM-08-24 - Boeing 737 Aeroplanes - Failure of certain Potable Water Couplers during Freezing Weather Conditions

FAA SAIB NM-08-24 is a Special Airworthiness Information Bulletin addressing the failure of certain potable water couplers on Boeing 737-600, 737-700, 737-800, and 737-900 series aircraft during freezing weather conditions. The bulletin highlights the risk of water spraying and freezing around the outflow valve, which can impair cabin pressure control. EASA SIB No. 2008-47 supports the FAA's advisory and informs European operators of the same concern.

Safety Information Bulletin
  • Boeing 737-600
  • Boeing 737-700
  • Boeing 737-800
  • Boeing 737-900