# 2026-15239: Boeing 777 Needs More Fuel Tank Prods: FAA's Endless Safety Dance

2026-15239, Airworthiness Directives; The Boeing Company Airplanes, is a Federal Register rule from Transportation Department, Federal Aviation Administration published 2026-07-28, effective 2026-09-01; PRIA reads it as touching household money (as of 2026-08-04).

- Canonical: https://policyrisk.com/federal-register/2026-15239
- As of: 2026-08-04
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-15239
- Title: Airworthiness Directives; The Boeing Company Airplanes
- Type: Rule
- Agencies: Transportation Department; Federal Aviation Administration
- Citation: 91 FR 47129
- Published: 2026-07-28
- Effective: 2026-09-01
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: 2120-AA64
- Last updated: 2026-08-04

## In one line

Boeing 777 Needs More Fuel Tank Prods: FAA's Endless Safety Dance

## Summary

The FAA is superseding Airworthiness Directive (AD) 2024-19- 14, which applied to certain The Boeing Company Model 777-200, 777- 200LR, 777-300ER, and 777F series airplanes. AD 2024-19-14 required repetitive inspections and bond resistance measurement of the bonding jumpers on the first fuel feed tube installed immediately forward of the wing front spar at the left and right main fuel tank penetrations and applicable corrective actions. This AD was prompted by a determination that additional inspections are required to address the unsafe condition. This AD requires repetitive detailed inspections (DETs), repetitive bond resistance measurement, and applicable on- condition actions. This AD also expands the applicability and requires revising the existing maintenance or inspection program, as applicable, to incorporate a certain airworthiness limitation. The FAA is issuing this AD to address the unsafe condition on these products.

## Effects PRIA read

- Mandatory 777 fuel-system inspections: benefit, high. The FAA requires repetitive detailed inspections (DETs) and bond resistance measurements of bonding jumpers on specified engine fuel feed tubes for all Boeing Model 777-200, -200LR, -300, -300ER, and 777F airplanes. The rule supersedes AD 2024-19-14, is effective September 1, 2026, expands applicab…
- Maintenance program revision deadline: cost, high. Within 60 days after the AD's effective date (i.e., by October 31, 2026), operators must revise their existing maintenance or inspection program to incorporate the AD's Critical Design Configuration Control Limitations (CDCCLs). The FAA estimates a one-time average cost of $7,650 per operator to pe…
- Recurring inspections and repair costs: cost, high. Operators must perform recurring inspections and resistance measurements: $255 per inspection cycle under Boeing Alert Requirements Bulletin 777-28A0097 RB and $376 per inspection cycle under Boeing Alert Requirements Bulletin 777-28A0098 RB (the latter approximately every 3 years). Depending on fi…

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## Sources
- [2026-15239 on federalregister.gov](https://www.federalregister.gov/documents/2026/07/28/2026-15239/airworthiness-directives-the-boeing-company-airplanes)
- [2026-15239 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-07-28/pdf/2026-15239.pdf)

## Related
- [Previous: 2026-15230, Civil Penalties Adjustment for 2026](https://policyrisk.com/federal-register/2026-15230)
- [Next: 2026-15284, Highly Erodible Land and Wetland Conservation](https://policyrisk.com/federal-register/2026-15284)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-15239 (as of 2026-08-04).