EASA Regulations for Boeing 737-9

29 airworthiness directives and regulations affecting Boeing 737-9.

EASA AD US-2020-14-09

Fuel - Kathon FP 1.5 Biocide - Removal / Installation / Airplane Flight Manual Revision

The Fuel - Kathon FP 1.5 Biocide - Removal / Installation / Airplane Flight Manual Revision is a Federal Aviation Administration (FAA) Airworthiness Directive (AD) addressing certain Boeing 737-8 and 737-9 (737 MAX) airplanes equipped with CFM LEAP-1B engines. This AD requires removal of Kathon FP 1.5 biocide from fuel tanks and engines, installation of a fuel limitation placard, and revision of the airplane flight manual to prohibit operation with this biocide in the fuel system. The directive responds to engine anomalies linked to the biocide causing fuel control instability and potential loss of thrust control.

Jul 15, 2020

Airworthiness DirectiveMaintenanceSafety MgmtFlight OpsBoeing 737Boeing 737-8Boeing 737-9

EASA AD US-2020-11-12

Nacelles / Pylons - Thumbnail Fairing and Mid Strut Fairing Panels - Inspection / Replacement / Modification

Federal Aviation Administration Airworthiness Directive 2020-11-12 is a final rule addressing certain Boeing 737-8 and 737-9 airplanes. It focuses on inspection, replacement, and modification of the thumbnail fairing and mid strut fairing panels on the engine nacelle and strut to ensure proper electrical bonding and shielding against high intensity radiated fields (HIRF). This directive aims to prevent potential dual-engine power loss and misleading propulsion parameter displays.

Jun 29, 2020

Airworthiness DirectiveMaintenanceSafety MgmtBoeing 737Boeing 737-8Boeing 737-9

EASA AD 2020-0055

SUPERSEDED BY EASA AD 2022-0071

EASA Airworthiness Directive 2020-0055 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting CFM International LEAP-1B engines installed on aircraft including Boeing 737-8 and 737-9 models. It mandates updated maintenance tasks, life limits, and software modifications to ensure continued airworthiness and address safety concerns related to high pressure turbine structures, rotor disc anomalies, bearing failures, and engine control software. The directive consolidates and supersedes previous ADs related to these engines.

Mar 11, 2020

Airworthiness DirectiveMaintenanceSafety MgmtCFM International LEAP-1BBoeing 737-8Boeing 737-9

EASA AD US-2020-03-20

SUPERSEDED BY FAA AD 2025-02-07

FAA Airworthiness Directive 2020-03-20 is a final rule addressing certain Boeing aircraft models including MD-11, MD-11F, 717-200, all 737-8 and 737-9, all 737-600/-700/-700C/-800/-900/-900ER series, certain 747-400 and 747-400F, certain 757 and 767, and all 777 airplanes. This directive requires revising the airplane flight manual to prohibit operations requiring less than 0.3 required navigational performance (RNP) within a specified geographic area for airplanes equipped with a Collins GLU-2100 multi-mode receiver (MMR) with certain software versions. The AD was issued due to reports of loss or degradation of GPS data affecting positional accuracy.

Feb 18, 2020

Airworthiness DirectiveFlight OpsSafety MgmtBoeing 717Boeing 737Boeing 747Boeing 757Boeing 767Boeing 777Boeing MD-11McDonnell Douglas MD-11McDonnell Douglas MD-11FBoeing 717-200Boeing 737-8Boeing 737-9Boeing 737-600Boeing 737-700Boeing 737-700CBoeing 737-800Boeing 737-900Boeing 737-900ERBoeing 747-400Boeing 747-400F

EASA AD US-2019-14-12

Flight Controls - Main Slat Track Assemblies - Inspection

Federal Aviation Administration Airworthiness Directive 2019-14-12 is a final rule addressing certain Boeing 737-8 and 737-9 airplanes. It mandates inspection and maintenance record checks of main slat track assemblies due to concerns about hydrogen embrittlement affecting their structural integrity. This directive aims to prevent potential slat failure that could jeopardize flight safety.

Aug 29, 2019

Airworthiness DirectiveMaintenanceSafety MgmtBoeing 737Boeing 737-8Boeing 737-9

EASA AD 2019-0137

SUPERSEDED BY EASA AD 2020-0055

EASA Airworthiness Directive 2019-0137 is an airworthiness directive addressing CFM International LEAP-1B engines installed on Boeing 737-8 and 737-9 aircraft. It mandates repetitive inspections of the transfer gearbox module scavenge screens for metallic particles due to potential failure of the radial drive shaft bearing cage. The directive aims to prevent in-flight engine shutdowns caused by this failure.

Jun 12, 2019

Airworthiness DirectiveMaintenanceSafety MgmtCFM International LEAP-1BBoeing 737-8Boeing 737-9

EASA AD US-2018-23-51

SUPERSEDED BY FAA AD 2020-24-02

FAA Airworthiness Directive 2018-23-51 is a final rule affecting all Boeing 737-8 and 737-9 airplanes. It requires revising the airplane flight manual to include procedures for flight crews to handle runaway horizontal stabilizer trim caused by erroneous high angle of attack sensor inputs. This directive addresses a safety risk identified by the manufacturer that could lead to loss of control and potential terrain impact.

Dec 12, 2018

Airworthiness DirectiveFlight OpsSafety MgmtBoeing 737Boeing 737-8Boeing 737-9

EASA AD 2018-0251

SUPERSEDED BY EASA AD 2020-0055

EASA Airworthiness Directive 2018-0251 is an airworthiness directive addressing CFM International LEAP-1B engines installed on Boeing 737-8 and 737-9 aircraft. It mandates updating the electronic engine control (EEC) software to prevent potential thrust loss caused by water accumulation in the FADEC pressure subsystem. This directive applies to all serial numbers of LEAP-1B21 through LEAP-1B28BBJ2 engine models.

Nov 20, 2018

Airworthiness DirectiveMaintenanceSafety MgmtCFM International LEAP-1BBoeing 737-8Boeing 737-9

EASA AD 2018-0239

Engine — High Pressure Turbine Case — Replacement

EASA Airworthiness Directive 2018-0239 is an official safety directive addressing the replacement of high pressure turbine (HPT) cases in CFM International LEAP-1B engines, which are installed on Boeing 737-8 and 737-9 aircraft. The directive targets specific HPT cases and combustor diffuser nozzle (CDN) cases identified by part and serial numbers due to concerns over unapproved weld repairs and potential life limit reductions. It mandates inspections and replacement of affected parts to prevent possible engine failure and uncontained debris release.

Nov 7, 2018

Airworthiness DirectiveMaintenanceSafety MgmtCFM International LEAP-1BBoeing 737-8Boeing 737-9