As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MSN/DEN - FLT 5537 - 'FLAP FAIL' MESSAGE IN CRUISE AT 35,000 FEET. NO SELECTION HAD BEEN MADE, LANDING SPEED 167 KNOTS WITH ZERO FLAPS. C/W SUPPLEMENT 98-18. NO TWISTING OF FLAPS EVIDENT. CLEARED FAULT BY DEPOWERING A/C, CYCLED FLAPS NUMEROUS TIMES. NO FURTHER DISCREPANCIES. TEST FLIGHT COMPLETED SATISFACTORILY. (X)