The FAA published a new AD on March 21st for the Cessna Citation 560XL. The AD was prompted by reports of jammed or stiff rudder actuation after water froze on the rudder bias cables and pulleys in the tail cone at high altitude.
“Birdbrain…” It’s more an insult to our feathered brethren than to the human deemed short on intellect.
The NTSB has issued its final report on the first of several incidents in which Cessna Citation 560XL Excels encountered rudder binding while in flight. The Board ruled that the manufacturer’s inadequate initial design and subsequent modifications of the aircraft’s tailcone allowed moisture to collect and freeze around rudder cables during flight above the freezing level, resulting in a loss of rudder authority. The Board cited the FAA’s lack of oversight of the manufacturer’s design and production as a contributing factor.
The FAA has issued an Airworthiness Directive for the Gulfstream Aerospace Galaxy and Gulfstream 200, citing cracked nuts found on the aircraft’s production line during routine post-assembly inspection. Investigation revealed that the cracks resulted from hydrogen embrittlement combined with high hardness.
As engineers design more structural components using composite materials, the resin transfer molding (RTM) process is seeing increased use in business jets. Bombardier’s Belfast facility is employing RTM to build Learjet 85 wings, and Gulfstream vendor North Coast Composites of Cleveland, Ohio, is using RTM to make G250 rudders.
Cessna Citation 560XL, Birmingham, Ala., Dec. 13, 2010–The twinjet experienced rudder binding while landing at Birmingham-Shuttlesworth Airport at the conclusion of a Part 135 flight from Teterboro Airport in New Jersey. The Excel landed safely with no injuries to the passenger and two pilots. A post-flight examination of the tail cone revealed ice around the rudder control cables and pulleys.
Cessna Citation 560XL, Toledo, Ohio, Dec. 1. 2010–The NetJets-operated Excel experienced a loss of rudder control while landing in VMC at Toledo Express Airport at the end of a Part 135 flight from Monmouth Executive Airport in New Jersey. The twinjet landed safely, and post-flight examination revealed that the airplane’s rudder control cables and pulleys inside the tailcone were sheathed in ice.
The high level of technology employed in Embraer’s newest business jet family, the Legacy 450 and 500 program, enables detailed exploration and development to take place much further ahead of first flight, according to Eduardo Camelier, chief test pilot for the Brazilian manufacturer.
The single-engine turboprop was destroyed but its ATP-certified pilot was unharmed when it departed the runway after touchdown at Montgomery County Airpark. The pilot told investigators that after he crossed the runway threshold at 81 knots and touched down normally, the TBM began to drift to the left. He attempted unsuccessfully to correct the drift by applying right rudder, and then began a
Eastham Aviation, a Houston owner of a Hawker Beechcraft Premier 1A, filed a complaint against Hawker Beechcraft on January 19, asking that the manufacturer take back the jet because of three alleged and irreparable instances of runaway rudder trim. Eastham purchased the jet in 2006.