Air carrier flight crew reported becoming distracted during a high workload descent on the chsly 2 R...

Attributes
ACN	1443156
Time
Date	201704
Local Time Of Day	1201-1800
Place
Locale Reference	CLT.TRACON
State Reference	NC
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Airbus 318/319/320/321 Undifferentiated
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	STAR CHSLY 2 RNAV
Flight Plan	IFR
Component
Aircraft Component	Autoflight System
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

Flight cleared to descend via CHSLY2 RNAV arrival into clt. Set bottom altitude to 6000 [feet] msg per procedure; cockpit workload high due to weather in area. Between whize and caatt intersection I noted speed error at caatt intersection. As pilot flying; I intervened and selected speed of 210kias and vertical speed in order to correct error; this left aircraft in an un-managed vertical mode with altitude set at bottom altitude (6000). Descent below 9000 occurred prior to caatt intersection before first officer trap error at 8800 feet. Aircraft was returned to minimum altitude of 9000 feet simultaneously with call from ATC; whom trapped the error as well. No loss of separation occurred and flight proceeded normally to landing. High workload environment led to not monitoring altitude constraints properly by pilot flying. In addition; full use of automation was 'dropped' in order to intervene with perceived error in FMGS. Due to high work load; pilot flying was task saturated. Fortunately pilot monitoring trapped error early enough as to not lose separation. Keep two pilots in cockpit in future in order to trap future errors.

Original NASA ASRS Text

Title: Air Carrier flight crew reported becoming distracted during a high workload descent on the CHSLY 2 RNAV into CLT; and descended below the descent profile.

Narrative: Flight cleared to descend via CHSLY2 RNAV arrival into CLT. Set bottom altitude to 6000 [feet] msg per procedure; Cockpit workload high due to weather in area. Between WHIZE and CAATT intersection I noted speed error at CAATT intersection. As pilot flying; I intervened and selected speed of 210kias and vertical speed in order to correct error; this left aircraft in an un-managed vertical mode with altitude set at bottom altitude (6000). Descent below 9000 occurred prior to CAATT intersection before First Officer trap error at 8800 feet. Aircraft was returned to minimum altitude of 9000 feet simultaneously with call from ATC; whom trapped the error as well. No loss of separation occurred and flight proceeded normally to landing. High workload environment led to not monitoring altitude constraints properly by pilot flying. In addition; full use of automation was 'dropped' in order to intervene with perceived error in FMGS. Due to high work load; pilot flying was task saturated. Fortunately Pilot Monitoring trapped error early enough as to not lose separation. Keep two pilots in cockpit in future in order to trap future errors.

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.

Air carrier flight crew reported becoming distracted during a high workload descent on the chsly 2 RNAV into clt; and descended below the descent profile.