B767 flight crew reported experiencing partial loss of airspeed indication and flight director along with other EICAS messages during departure. Flight crew returned to departure airport.
Synopsis
B767 flight crew reported experiencing partial loss of airspeed indication and flight director along with other EICAS messages during departure. Flight crew returned to departure airport.
Narrative
right after takeoff; we lost the CA side airpseed indicator;; this trigger the EICAS messages ; 'Rudder Ratio; and Aileron Lockout'. FO called for gear up;; right after the gear came up the the FO lost his Flight Director. I cleaned up the flaps and then we got EICAS messages; ' L ENG EEC (Electronic Engine Control) and R ENG EEC' both at the same time. This also kicked off the Auto Throttles. Right as this happened Tower gave us clearance to climb to FL160 and turn to 120 heading. I responded we needed to return to ZZZ. He asked what we wanted. I told him the RNAV for XXR. ( XXL and XXL were closed.) Tower told us; turn heading 180 and maintain 3100; vectors for the RNAV XXR. I dialed that in the MCP (Mode Control Panel) and loaded the approach in the FMC; then started to go through the QRH for the multiple EICAS messages we had. FO was now flying manually since the Auto Throttles and A/P (Autopilot) disconected and the Flight director would not re-engage. As I was going through the QRH; we got an altitude alert; I looked up and saw we were at 3500 ft. Told FO we need to get back down to 3100. He corrected. But few minutes later got another altitude alert; now I saw we were at 2700 ft.. told him we were low now.. He correct and got back to 3100 and we were stable. Tower vectored us to the approach; as we turned final we saw the airport and accepted a visual approach and landed with no further problems. We taxied back to the gate. Cause: I did not see any notes in the logbook that pitot covers were put on the plane. It had been parked for about 7 days since the last flight.. My guess that caused the airspeed failure.Not sure what would cause both EEC to fail at the same time. I asked MX (Maintenance); they had no idea.From my system knowledge they have nothing in common that could cause a dual failure.FO probably had a little trouble maintaining altitude because we rarely fly with no Autopilot; no flight director Suggestions: use pitot covers in ZZZ any time the plane will sit for 24 hours or more
Second reporter narrative
On takeoff out of ZZZ the Captain had no airspeed indication & we received a rudder ratio & aileron lockout EICAS. Shortly after I lost my flight director & we received L ENG EEC (Electronic Engine Control) & R ENG EEC EICAS. ATC then cleared us up to 16;000 but we both agreed to head back to ZZZ for a return. ATC then clears us to return to ZZZ via radar vectors for RNAV XXR maintain 3100. While getting all set up & trying to understand the situation we were in I was high & low with the altitudes coming into ZZZ. We corrected & got stable at 3100 then ATC cleared us for the approach & landing. We did a normal landing & taxied back to the gate. Cause: The plane had been sitting for a couple of days; we were unaware if any pitot covers were on at anytime. That would be my guess for the airspeed on Captains side. Still unaware of how both EECs came offline. Suggestions: Having a better scan when hand flying. Not getting task saturated when we have a lot of things going on. Just remember to fly the airplane & work as a crew.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.