What was found
MDIS 297 34-61 3894 08FEB20 MEM FACT U. PER CREW VERBAL: DURING APPROACH A/C FULLY CONFIGURED FLAPS 30, VREF FOR THE LANDING WEIGHT OF 302.3 WAS COMPUTING 141 KTS. AT THIS AIRSPEED THE STALL ZIPPER WAS ABOVE THE VREF SPEED APPROXIMATELY 7-8 KNOTS. THE HUD ANGLE OF ATTACK INDICATED NORMAL FOR THE APPROACH CONFIGURATION AT THE 3 O'CLOCK POSITION. SHGN 08FEB20 18:31 MEM U ERS 20-00527 SUBMITTED. SHGN 09FEB20 08:23 MEM U. PERFORMED TEST 64 AND 66 AS REQUESTED, NO FAULTS NOTED. ALL FLAP TRANSMITTER AND POSITION READINGS NORMAL AT ALL FLAP POSITIONS. PERFORMED STALL WARNING OPERATIONAL TEST, IAW 767 MM 27-32-00-5 WITH NORMAL RESULTS AND NO FAULTS. ALSO NO FLIGHT FAULTS LOGGED. SHGN 09FEB20 22:01 MEM U. PERFORMED ANGLE OF ATTACK SENSOR TEST ON LEFT AND RIGHT AOA'S, REF 767 AMM 34-12-03-4. ALL VALUES WITHIN LIMITS. PERFORMED WIRING CHECKS AND VERIFIED SLAT INPUTS TO THE FSEU AND PSEU AS REQUESTED BY BOEING (ERS# 20-00527) AND ALL VALUES ARE WITHIN SPEC, PER BOEING FIGURES. SUSPECT THIS TO BE A NUISANCE FAULT AS SPELLED OUT IN 767 AMM CHAPTER 27-32-00-0-2 PARAGRAPH 2 SUBPARAGRAPH C (7). PERFORMED CIRCUIT BREAKER RESET ON WEU A/B AND OPERATIONAL CHECKS OF WEU GOOD REFERENCING 767 AMM 31-51-04. PERFORMED STALL WARNING OPERATIONAL TEST, IAW 767 MM 27-32-00-5 WITH NORMAL RESULTS AS WELL. NO PRIOR HISTORY OF ANY KIND, AIRCRAFT OK FOR SERVICE.