TBO Extension To Include Citation Bravo, Encore Engines

TBO Extension, which provides FAA-certified engine life extension solutions for business aircraft, is expecting FAA authorization to expand its engine-life extension supplemental type certificate (STC) to include the Pratt & Whitney Canada (P&WC) PW530A and PW535A engines, which power the Cessna Citation Bravo and Encore, respectively.

The Atlantic Jet Partners subsidiary’s STC modification for the P&WC JT15D—which powers several legacy Citations, along with the Beechjet 400A/Hawker 400XP—has been installed on more than 200 engines as a cost-effective alternative to OEM overhaul. It has added more than 2,000 hours of flight service life per engine and significantly reduced ownership costs.

Under the traditional overhaul model, operators can expect costs up to $4 million and as much as 9 months of downtime, TBO Extension noted. Under its program, the price is reduced to between $1 million and $1.5 million for both engines, including hot section inspection, and that can be accomplished in approximately six weeks.

With the STC expansion, Citation Bravo and Encore operators will now be able to extend their engine life by up to 2,500 hours through the same approach, according to the company.

“For more than a decade, we’ve shown JT15D operators there’s a smarter FAA-certified alternative to the traditional overhaul cycle,” said Jim Clifford, the company’s v-p of product development. “With the new PW530/535 STC, we’re extending that same proven advantage to Citation Bravo and Encore operators: lower costs, faster turnaround, and increased asset value.”

For operators who commit by November 1 and place their deposit by December 1, TBO Extension is offering reduced pricing and priority installation slots ahead of the FAA STC approval, which is anticipated in early 2026.