Philippine Airlines flight PR102, utilizing the carrier’s first Boeing B777-300ER (registration RP-C7777), underwent a Rejected Takeoff (RTO) procedure last night based on data from FlightRadar24.com. The incident occurred around 2221H Philippine Standard Time (PhST) as the flight was scheduled to depart Ninoy Aquino International Airport (MNL) for Los Angeles International Airport (LAX).
An RTO, also known as a rejected takeoff, is a critical maneuver where pilots abort the takeoff acceleration and bring the aircraft to a complete stop on the runway. This safety measure is initiated for various reasons, including potential engine failure, malfunctions in the aircraft’s systems, or even obstacles detected on the runway itself.
The airline released the following statement to the media:
06July2024
Philippine Airlines confirms that flight PR102 to Los Angeles discontinued its take-off due to a technical issue.
All 361 passengers were safely deplaned and provided hotel accommodations.
A replacement flight to Los Angeles has been arranged to accommodate passengers of the cancelled flight. The new flight is scheduled to depart at 2:00PM today (06 July). PAL apologizes for the inconvenience caused by the incident.
Ensuring passenger and crew safety is paramount during an RTO. Pilots follow a strict protocol that involves immediate activation of the brakes, deployment of spoilers to decrease lift, and thrust reversal of the engines to decelerate the aircraft as rapidly as possible. The success of this maneuver heavily relies on the speed at which it’s commenced. At lower speeds, stopping the airplane is less challenging. However, at higher speeds, an RTO can be more demanding, placing immense stress on the brakes and tires.
While uncommon, tire deflation can occur during an RTO in extreme situations. The intense heat generated by the brakes during heavy braking can significantly increase the air pressure within the tires. If this pressure isn’t adequately regulated, a tire burst becomes a possibility.
Some aircraft are equipped with wheels that incorporate specifically designed fuse plugs. These plugs are engineered to melt at high temperatures. In the event of excessive tire pressure buildup, the fuse plugs will melt, releasing pressure and preventing a catastrophic tire explosion.
Following an RTO, a thorough inspection by aircraft maintenance crews is mandatory. This inspection focuses on the tires and brakes, ensuring their airworthiness before the aircraft is cleared for its next flight.
(AvGeekPH file photo)