EASA AD US-2020-18-13: NOT ADOPTED - EASA DECISION ATTACHED

What to do

Operators of affected Boeing 737-600 through 900ER series airplanes must comply with the AD by modifying the FQIS as specified. They should review the FAA docket FAA-2016-6139 for detailed instructions and ensure modifications are completed by the effective date. Cargo operators should consider the alternative actions provided. The compliance deadline is October 29, 2020.

Summary

The document titled NOT ADOPTED - EASA DECISION ATTACHED is a Federal Aviation Administration (FAA) final rule airworthiness directive (AD 2020-18-13) addressing certain Boeing 737-600, -700, -700C, -800, -900, and -900ER series airplanes. It mandates modifications to the fuel quantity indicating system (FQIS) to prevent ignition sources inside the center fuel tank caused by electrical faults. The directive also includes alternative actions for cargo-configured airplanes to mitigate the risk of fuel tank explosions.

What changed

This new airworthiness directive introduces a requirement to modify the FQIS on affected Boeing 737 models to eliminate potential ignition sources within the center fuel tank. It establishes compliance actions to address latent electrical faults that could lead to catastrophic fuel tank explosions. Additionally, it provides alternative compliance options specifically for cargo airplanes.

Why it matters

This AD is critical for aviation professionals as it addresses a significant safety risk involving ignition sources in fuel tanks, which could cause explosions and loss of aircraft. Operators and maintenance organizations must ensure compliance to maintain airworthiness and passenger safety. The directive clarifies regulatory expectations beyond existing fuel tank flammability reduction rules, emphasizing the need for proactive risk mitigation in fuel system design and maintenance.

What to do

Summary

What changed

Why it matters

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