<< >> NASA ASRS Report 1434511, March 2017

Sct TRACON controller reported confusion from an inbound lgb pilot on a the new metroplex RNAV approach clearance.

Attributes
ACN	1434511
Time
Date	201703
Local Time Of Day	1201-1800
Place
Locale Reference	LGB.Airport
State Reference	CA
Environment
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 900 (CRJ900)
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Person 1
Function	Approach
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT

Narrative:

Aircraft X was on the new metroplex RNAV approach inbound to lgb. The pilot was given the phraseology to descend via except maintain 5000. The pilot read back everything correctly but was confused by what that meant with the new procedures. The pilot immediately started to descend to 5000 instead of complying with the crossing restrictions of the arrival. Since it's a new procedure; I asked the pilot if he was descending with arrival which the pilot responded yes. When I pulled up the map he was way below the arrival and also below the MVA.it's early in the metroplex implementation but some of the pilots still seem confused on what they are supposed to be doing with the procedure changes.

Related reports:

• Tower controller reported that an inbound aircraft had mista...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: SCT TRACON Controller reported confusion from an inbound LGB pilot on a the new Metroplex RNAV Approach clearance.

Narrative: Aircraft X was on the new METROPLEX RNAV approach inbound to LGB. The pilot was given the phraseology to descend via except maintain 5000. The pilot read back everything correctly but was confused by what that meant with the new procedures. The pilot immediately started to descend to 5000 instead of complying with the crossing restrictions of the arrival. Since it's a new procedure; I asked the pilot if he was descending with arrival which the pilot responded yes. When I pulled up the map he was way below the arrival and also below the MVA.It's early in the Metroplex implementation but some of the pilots still seem confused on what they are supposed to be doing with the procedure changes.

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.