Survivors of a Turkish Airlines crash at Amsterdam's Schiphol Airport in February plan to sue Boeing in the United States for up to US$20 million each, a Dutch law office said on Sep. 7.

Nine people were killed when flight TK1951 from Istanbul crashed on approach to Schiphol on the morning of Feb. 25 and Dutch investigators have said a faulty left-hand altimeter shut down the engine of the Boeing 737-800 before it crashed.

Boeing said in response that it was "issuing a reminder to all 737 operators to carefully monitor primary flight instruments during critical phases of flight".

Dutch law office AKD Prinsen Van Wijmen (AKD) said 10 survivors of the crash have agreed on its advice to ask Clifford Law Offices to start proceedings in the United States against Boeing. The case could be lodged in two to six weeks.

"Boeing does not comment on open litigation," Boeing spokesman Jim Proulx said.

Frans Vreede at law firm AKD said other lawyers in the United States are also preparing cases against Boeing, adding Boeing is currently not willing to consider offering a settlement.

Severely injured passengers could claim up to US$20 million in damages each, Vreede said.