This article is based on official safety recommendations and accident reports from the National Transportation Safety Board (NTSB).

NTSB Issues Urgent Safety Recommendations for Hawker 800XP and 900XP Post-Maintenance Flights

The National Transportation Safety Board (NTSB) has issued urgent safety recommendations calling for immediate changes to pilot qualifications and testing procedures for Hawker 800XP and 900XP Commercial-Aircraft. The recommendations are directed at Textron Aviation, the Federal Aviation Administration (FAA), and the National Business Aviation Association (NBAA) following two fatal accidents involving post-maintenance stall test flights.

According to the NTSB, the current regulatory framework allows standard line pilots to conduct high-risk functional check flights that require test-pilot-level skills. The agency has identified a critical gap in training and experience that has contributed to the loss of life in recent years.

The urgent action was triggered by investigations into two separate crashes, one in Michigan in October 2025 and another in Utah in February 2024, where crews lost control of their aircraft while attempting to verify stall warning systems after wing maintenance.

Urgent Recommendations for Industry Stakeholders

The NTSB’s report outlines specific actions required from the Manufacturers, the regulator, and industry advocacy groups to prevent further tragedies.

Directives to Textron Aviation

As the manufacturer, Textron Aviation is being urged to establish specific pilot qualification standards. These standards must define the experience, training, and proficiency required to safely conduct post-maintenance stall tests. Furthermore, the NTSB recommends that Textron revise aircraft maintenance and flight manuals to include standardized “stall test plans.” These plans should explicitly outline safe execution procedures, abort criteria, and risk management Strategy.

Directives to the FAA

The NTSB has called upon the FAA to mandate compliance with the new criteria established by Textron. The recommendations suggest that the FAA must increase oversight to ensure that only qualified pilots, potentially those meeting test-pilot-like standards, are authorized to perform these high-risk functional check flights. Currently, operators of Hawker 800XP/900XP aircraft are not strictly required to use specialized test pilots for these specific maintenance checks.

Directives to the NBAA

The NBAA has been tasked with disseminating this urgent safety information to its membership immediately. The NTSB emphasizes the need for collaboration between the NBAA, FAA, and Textron to develop and promote best practices for conducting post-maintenance functional check flights.

The Catalyst: Two Fatal Accidents

The NTSB’s urgent recommendations stem from two accidents where flight crews were unable to recover from stalls induced during mandatory post-maintenance checks.

The Michigan Accident (October 2025)

On October 16, 2025, a Hawker 800XP (Registration XA-JMR) crashed near Bath Township, Michigan, killing all three occupants. The aircraft had just completed seven months of routine maintenance at Duncan Aviation, which included the removal and reinstallation of wing leading edges and TKS ice-protection panels. This maintenance required a mandatory post-maintenance stall test flight.

According to the NTSB investigation, the operator elected to use their regular flight crew rather than professional test pilots, despite the maintenance facility providing a list of qualified test pilots for hire. The crew climbed to 15,000 feet to perform the test, but ADS-B data showed a rapid descent shortly after.

“We are in a stall… recovering… sorry.”

— Final transmission from the crew of XA-JMR, per NTSB records.

Investigators believe the crew likely encountered “aileron snatch,” an uncommanded roll phenomenon, or deep stall characteristics they were not trained to handle.

The Utah Accident (February 2024)

On February 7, 2024, a Hawker 900XP (Registration N900VA) crashed near the Utah-Colorado border, resulting in the deaths of both pilots. The aircraft was on a repositioning flight following maintenance at West Star Aviation. The NTSB Final Report determined that the crew attempted to perform the stall test in icing conditions, which is explicitly prohibited by the flight manual.

The investigation concluded that ice contamination on the wings likely degraded performance, causing the stall to occur earlier than expected and simultaneously with the stick shaker activation. This gave the crew no time to react before the aircraft entered a spin.

Technical Context: The Dangers of the Hawker Stall

The NTSB report highlights specific aerodynamic characteristics of the Hawker 800/900XP series that make these tests particularly hazardous for untrained pilots.

Lack of Natural Warning

Unlike many aircraft that provide a natural aerodynamic buffet (shaking) before stalling, the Hawker 800/900XP relies entirely on mechanical systems, specifically the stick shaker and stick pusher. During these maintenance tests, pilots are required to fly the aircraft to the very edge of its envelope to verify that the stick pusher activates to force the nose down.

Aileron Snatch and Roll

At the point of stall, airflow separation on the Hawker wings can cause the ailerons to “snatch,” leading to a violent, uncommanded roll of up to 80 degrees. Standard pilot training emphasizes using ailerons to correct a bank, but in a stall scenario, this input can worsen the situation and induce a spin.

The Qualification Gap

The NTSB identified a critical “gap” in pilot qualifications. Standard corporate pilot training focuses on avoiding stalls and recovering at the first indication of a stick shaker. However, maintenance tests require pilots to intentionally fly past that safety margin. Most corporate pilots have never performed a full aerodynamic stall in the actual aircraft, as simulators often do not perfectly replicate the violent roll characteristics of the actual jet.

AirPro News Analysis

These recommendations mark a significant shift in how the industry views “routine” maintenance flights. For decades, there has been a gray area regarding who is qualified to return an aircraft to service after major wing maintenance. By pushing for test-pilot-level qualifications, the NTSB is signaling that the era of using line pilots for functional check flights (FCFs) on complex airframes may be ending.

For operators, this will likely result in increased costs and scheduling complexities, as they may need to contract specialized crews for post-maintenance flights. However, the Safety data presented by the NTSB suggests that the cost of convenience, using regular crews for test-pilot work, is unacceptably high.

Sources

• NTSB Safety Recommendation Report DCA26SR003