B737-800 flight crew reported failure of airspeed and altimeter instruments on climbout.

Attributes
ACN	1629292
Time
Date	201903
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Airspeed Indicator
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Clearance

Narrative:

During climb-out the captain's airspeed and altimeter failed along with an oral warning. Performed qrc and then QRH procedures for unreliable airspeed. Climbed above IMC conditions and proceeded to nearest suitable VMC airport. During descent the eec (electronic engine controller) alt annunciators illuminated when recal selected. [Coordinated with ATC] and landed uneventfully.

Original NASA ASRS Text

Title: B737-800 flight crew reported failure of airspeed and altimeter instruments on climbout.

Narrative: During climb-out the Captain's airspeed and altimeter failed along with an oral warning. Performed QRC and then QRH procedures for Unreliable Airspeed. Climbed above IMC conditions and proceeded to nearest suitable VMC airport. During descent the EEC (Electronic Engine Controller) Alt annunciators illuminated when Recal selected. [Coordinated with ATC] and landed uneventfully.

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.