EASA AD US-2019-23-04: Fuel - Fuel Quantity Indicating System - Modification | RegNotify

Airworthiness DirectiveEASA AD US-2019-23-04

Fuel - Fuel Quantity Indicating System - Modification

Published: Jan 14, 2022
Effective: Feb 4, 2020

Boeing 727

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators of Boeing 727 aircraft with body-mounted auxiliary fuel tanks should modify the fuel quantity indicating system as specified in FAA AD 2019-23-04 or deactivate the auxiliary tanks. Although no Boeing 727s are currently registered in EASA states, stakeholders should remain aware of this requirement for future compliance. For further information, contact EASA's Safety Information Section.

Summary

EASA Decision to adopt FAA AD 2019-23-04 is an airworthiness directive concerning certain Boeing 727 aeroplanes equipped with Boeing body-mounted auxiliary fuel tanks. It mandates modification of the fuel quantity indicating system (FQIS) to prevent ignition sources inside these auxiliary fuel tanks caused by electrical faults. This decision aligns EASA regulations with the FAA's safety requirements.

What changed

This decision introduces the adoption of FAA AD 2019-23-04 by EASA, requiring modification of the FQIS on affected Boeing 727 aircraft or alternatively deactivating the body-mounted auxiliary fuel tanks. Previously, EASA had suspended adoption due to insufficient data but now considers the FAA's required actions justified and proportionate to the risk.

Why it matters

This adoption is important for aviation professionals as it addresses a potential ignition risk inside auxiliary fuel tanks, enhancing flight safety. Operators and maintenance organizations must ensure compliance to avoid unsafe conditions and regulatory penalties. It also harmonizes safety standards between EASA and FAA jurisdictions.

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