A B737-800 captain reported the right IRS fault light illuminated accompanied by the autopilot disco...

Narrative:

At FL360; right IRS fault light illuminated with autopilot disconnected. Speed trim failure light also illuminated. First officer (first officer) altitude instruments blank and no first officer flight display (FD). We ran checklist for IRS fault and speed trim fail. Unable to restore first officer instruments with navigation selected on IRS. ATC was notified of failure along with dispatch. Flight controls transferred to captain with good instruments. Checklist completed; IRS switch both on 1. Flight operations manual referenced; as autopilot would not engage with either a or B; aircraft not rvsm capable. ATC notified.vectors and descent provided. Dispatch sends message LNAV/VNAV still operable (via flight director). Captain and first officer concur. No instructions on QRH or dispatch to land at nearest suitable airport so flight continued planned route. CRM and risk management discussed relating to pilot monitoring functions for radio; assertive calls for pilot flying deviations; and autopilot FD control. Flight continued with captain manually flying. Arrival; approach and landing were uneventful. Logbook entries made; maintenance notified via radio.

Original NASA ASRS Text

Title: A B737-800 Captain reported the right IRS Fault Light illuminated accompanied by the autopilot disconnect; SPEED TRIM FAIL and blank First Officer Instruments. The flight descended out of RVSM with an unusable autopilot but continued to the filed destination.

Narrative: At FL360; right IRS Fault light illuminated with autopilot disconnected. Speed Trim Failure light also illuminated. First Officer (FO) altitude instruments blank and no FO Flight Display (FD). We ran checklist for IRS Fault and Speed Trim Fail. Unable to restore FO instruments with NAV selected on IRS. ATC was notified of failure along with Dispatch. Flight controls transferred to Captain with good instruments. Checklist completed; IRS switch both on 1. Flight Operations Manual referenced; as autopilot would not engage with either A or B; aircraft not RVSM capable. ATC notified.Vectors and descent provided. Dispatch sends message LNAV/VNAV still operable (via flight director). Captain and FO concur. No instructions on QRH or Dispatch to land at nearest suitable airport so flight continued planned route. CRM and risk management discussed relating to Pilot Monitoring functions for radio; assertive calls for Pilot Flying deviations; and autopilot FD control. Flight continued with Captain manually flying. Arrival; approach and landing were uneventful. Logbook entries made; Maintenance notified via radio.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1462775
Time
Date	201707
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	INS / IRS / IRU
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 354
Events
Anomaly	Aircraft Equipment Problem Critical

A B737-800 captain reported the right IRS fault light illuminated accompanied by the autopilot disconnect; speed trim fail and blank first officer instruments. The flight descended out of rvsm with an unusable autopilot but continued to the filed destination.