# 2024-31624: Fancy Private Jets Have Hoses That Rub Wrong Way

2024-31624, Airworthiness Directives; Bombardier, Inc., Airplanes, is a Federal Register proposed rule from an unnamed agency published 2025-01-06, effective The FAA must receive comments on this proposed AD by February 20, 2025.; PRIA reads it as touching household money (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2024-31624
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2024-31624
- Title: Airworthiness Directives; Bombardier, Inc., Airplanes
- Type: Proposed Rule
- Agencies: unknown
- Citation: unknown
- Published: 2025-01-06
- Effective: The FAA must receive comments on this proposed AD by February 20, 2025.
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-06-11

## In one line

Fancy Private Jets Have Hoses That Rub Wrong Way

## Summary

The FAA wants Bombardier BD-700-1A10 and BD-700-1A11 airplane owners to check certain engine pump hoses for wear and damage because they might rub against parts and cause problems. If any issues are found, fixes must be made to keep the planes safe. Comments on this plan are open until February 20, 2025, and the inspections could cost some time and money but will keep flights safer.

## Abstract

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. This proposed AD was prompted by reports of engine-driven pump hydraulic pressure hoses for hydraulic systems number 1 and 2 chafing against the pylon in the aft equipment bay. This proposed AD would require an inspection of the engine-driven pump pressure hoses for any damage and minimum clearance between the engine-driven pump hydraulic pressure hose and case drain, suction pressure hose, and surrounding pylon structure; and corrective actions if necessary. The FAA is proposing this AD to address the unsafe condition on these products.

## Effects PRIA read

- Mandatory hose inspections within 500 hours: cost, low. If you own or operate a Bombardier BD-700-1A10 or BD-700-1A11 airplane (S/Ns 60001–60076, 60083, 60087, 60089), you must do a borescope inspection of specified engine-driven pump hydraulic pressure hoses within 500 flight hours or 18 months after the AD's effective date. The inspection checks for d…
- Estimated inspection and repair costs: cost, medium. The FAA estimates this proposed AD affects 36 U.S.-registered airplanes. The estimated cost for the required inspection is $170 per airplane (2 work-hours at $85/hour), for a total of $6,120 across the U.S. fleet; if on-condition repairs are needed, the FAA estimates up to $1,396 per airplane (2 wo…
- Reduces risk of hydraulic failure: benefit, high. The AD is intended to find and fix chafing or inadequate clearance of engine-driven pump hydraulic pressure hoses to prevent hydraulic leaks and failures. By requiring inspection and corrective action, the rule aims to reduce the risk of losing hydraulic systems number 1 and 2, which would substant…

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## Sources
- [2024-31624 on federalregister.gov](https://www.federalregister.gov/documents/2025/01/06/2024-31624/airworthiness-directives-bombardier-inc-airplanes)
- [2024-31624 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-01-06/pdf/2024-31624.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/2024-31624 (as of 2026-06-11).