BoeingBoy
Veteran
- Nov 9, 2003
- 16,512
- 5,865
- Banned
- #1
I thought some of our posters might be interested to see the evolution of delays throughout a day. This is a somewhat unusual day for PHL - not because of ATC delays but because it got so bad that US requested further delays due to ramp congestion.
So here is a look at the day from ATC's viewpoint, with only those bits that affect PHL....
The day starts normally enough for a summer day. This is the ATC command center advisory from 6:00 AM (1000Z) with the operations plan:
ATCSCC ADVZY 012 DCC 07/17/05 OPERATIONS PLAN
VALID FOR 171000 THRU 171600
TERMINAL CONSTRAINTS:
NY METROS/PHL/DC METROS/ATL/PIT/CLE/DTW-LOW CIGS/PM SCT TSTMS
ENROUTE CONSTRAINTS:
ZNY/ZDC/ZOB/ZID/ZME/ZMP-TSTMS
[NY, Washington, Cleveland, Indianapolis, Memphis, Minneapolis Centers can expect thunderstorms to affect operations]
1. ROUTES
UNTIL 1600Z -ZBW/ZNY TACTICAL REROUTES.
[Boston & NY centers can expect rerouting of aircraft until 1600Z]
2. ZNY
UNTIL 1500Z -NY METROS/PHL GROUND STOPS POSSIBLE.
The next operations plan update comes out about 7:30 AM (1130Z):
ATCSCC ADVZY 015 DCC 07/17/05 OPERATIONS PLAN
VALID FOR 171200 THRU 171800
TERMINAL CONSTRAINTS:
NY METROS/PHL/DC METROS/ATL/PIT/CLE/DTW-LOCIGS/TSTMS
[Low ceilings/thunderstorms could affect these airports]
ENROUTE CONSTRAINTS:
ZNY/ZDC/ZOB/ZID/ZME/ZMP-TSTMS
1. ROUTES
UNTIL 1600Z -ZBW/ZNY TACTICAL REROUTES
AFTER 1830Z -POSSIBLE CHOKE POINTS FOR EWR/JFK
2. ZNY
UNTIL 1500Z -PHL LIMITED AIRBORNE HOLDING, CDR'S, GROUND STOPS POSSIBLE
The 9:30 ops plan update is still only covering the possibilities:
ATCSCC ADVZY 022 DCC 07/17/05 OPERATIONS PLAN
VALID FOR 171400 THRU 172000
TERMINAL CONSTRAINTS:
NY METROS/PHL/DC METROS/ATL/PIT/CLE/DTW-TSTMS
ENROUTE CONSTRAINTS:
ZNY/ZDC/ZOB/ZID/ZME/ZMP-TSTMS
1. ROUTES
AFTER 1500Z -EXPECT CHOKE POINTS FOR EWR/JFK
3. ZNY
AFTER 1800Z -PHL LIMITED AIRBORNE HOLDING, CDR'S, SWAP, EXPECT
GROUND DELAY PROGRAMS IN SUPPORT OF SWAP
Finally, at 10:30 AM 91430Z)ATC starts assigning ground holds for flights estimated to arrive PHL between 1800Z & 0200Z (2:00PM to 10:00 PM):
AIRPORT: PHL
ARRIVALS ESTIMATED FOR: 17/1800Z - 18/0159Z
PROGRAM RATE: 38/38/38/38/38/38/48/48
[The arrival rate per hour for each hour of the period covered - 2:00 PM till 10:00 PM]
FLIGHTS INCLUDED: ALL CONTIGUOUS US DEPARTURES
SCOPE: (Manual) ZSE ZLC ZFW ZAU ZMP ZDV ZKC ZME ZID ZMA ZHU ZJX ZOB
ZBW ZTL ZNY ZDC ZOA
[This list covers about every ATC center in the lower 48 except Los Angeles & Albuquerque]
ADDITIONAL FACILITIES INCLUDED:
CANADIAN AIRPORTS INCLUDED: CYHZ CYOW CYUL CYYZ
DELAY ASSIGNMENT TABLE APPLIES TO: ZNY
MAXIMUM DELAY: 127
AVERAGE DELAY: 64.5
REASON: WEATHER, SWAP SUPPORT
[SWAP = Severe Weather Avoidance Plan]
At 3:11PM (1911Z), the ATC command center issues this ground stop:
AIRPORT: PHL
GROUND STOP PERIOD: 17/1909Z - 17/2000Z
SCOPE: (2ndTier+CZY_AP) ZAU ZMP ZID ZJX ZOB ZBW ZTL ZNY ZDC CYHZ
CYOW CYUL CYYZ
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 407/60/18.5
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 1090/87/49.5
REASON: WEATHER, TSTMS
PROBABILITY OF EXTENSION: MEDIUM
About 45 minutes later, this is issued cancelling the ground stop and returning to ground holds:
AIRPORT: PHL
ARRIVALS ESTIMATED FOR: 17/1949Z - 18/0359Z
PROGRAM RATE: 34
[Hourly arrival rate per hour for the period in the line above - notice it's lower than before]
FLIGHTS INCLUDED: ALL CONTIGUOUS US DEPARTURES
SCOPE: (Manual) ZSE ZLC ZFW ZAU ZMP ZDV ZKC ZME ZID ZMA ZHU ZJX ZOB
ZBW ZTL ZNY ZDC ZOA
ADDITIONAL FACILITIES INCLUDED:
CANADIAN AIRPORTS INCLUDED: CYHZ CYOW CYUL CYYZ
DELAY ASSIGNMENT TABLE APPLIES TO: ZNY
MAXIMUM DELAY: 384
AVERAGE DELAY: 181.5
REASON: WEATHER, TSTMS
REMARKS: GROUND STOP CANCELLED, FLTS RLS ON NEW EDCTS. GDP WILL BE
REVISED AS CONDITIONS WARRNAT. THE FOLLOWING FACILITES ARE GROUND
STOPPED UNTIL 2100Z: ZOB/ZAU/ZMP.
[Flights released on new Estimated Departure Clearance TimeS (Takeoff, not taxi). Aircraft departing airports within Cleveland, Chicago, & Minneapolis Centers still stopped]
At 4:14PM (2014Z) the ground stops go back in effect:
AIRPORT: PHL
ADL TIME: 2014Z
GROUND STOP PERIOD: 17/2014Z - 17/2130Z
SCOPE: (2ndTier+CZY_AP) ZAU ZMP ZID ZJX ZOB ZBW ZTL ZNY ZDC CYHZ
CYOW CYUL CYYZ
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 3538/175/117.9
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 4055/224/135.2
REASON: WEATHER, TSTMS
PROBABILITY OF EXTENSION: MEDIUM
REMARKS: NO RTES AVAILABLE.
An hour later, things are getting worse again:
AIRPORT: PHL
ADL TIME: 2114Z
GROUND STOP PERIOD: 17/2014Z - 17/2230Z
SCOPE: (ALL+CZY_AP) ZSE ZAB ZLC ZFW ZLA ZAU ZMP ZDV ZKC ZME ZID ZMA
ZHU ZJX ZOB ZBW ZTL ZNY ZDC ZOA CYHZ CYOW CYUL CYYZ
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 6349/281/127.0
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 8764/287/175.3
REASON: WEATHER, TSTMS
PROBABILITY OF EXTENSION: MEDIUM
REMARKS:
Another hour passes (it's 2214Z or 6:14 PM) and it gets even worse - look at the acceptance rate:
AIRPORT: PHL
ADL TIME: 2214Z
ARRIVALS ESTIMATED FOR: 17/2215Z - 18/0459Z
PROGRAM RATE: 28/28/34/34/34/34/34
FLIGHTS INCLUDED: ALL CONTIGUOUS US DEPARTURES
SCOPE: (Manual) ZSE ZLC ZFW ZAU ZMP ZDV ZKC ZME ZID ZMA ZHU ZJX ZOB
ZBW ZTL ZNY ZDC ZOA
ADDITIONAL FACILITIES INCLUDED:
CANADIAN AIRPORTS INCLUDED: CYHZ CYOW CYUL CYYZ
DELAY ASSIGNMENT TABLE APPLIES TO: ZNY
MAXIMUM DELAY: 403
AVERAGE DELAY: 221.9
REASON: WEATHER, TSTMS
REMARKS: GROUND STOP CANCELED, ACFT RLSD ON NEW EDCT'S.
Just before 8:00PM things are getting better - the delays are coming down:
AIRPORT: PHL
ADL TIME: 2354Z
COMPRESSION PERIOD: 17/2354Z - 18/0745Z
[ATC has been "compressing" the departure times - EDCTS, i.e. reducing the length of the delays]
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 22689/367/189.1
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 19824/397/165.2
REASON: WEATHER, TSTMS
Then at 8:20PM our ramps get so congested that we request a US only ground stop (gotta love that east operation at PHL):
ATCSCC ADVZY 003 DCC 07/18/05 "US AIRWAYS" GROUND STOP
DESTINATION AIRPORT: PHL
FACILITIES INCLUDED: ZNY2+CZY
EXPECT UPDATE: 0130Z
REASON: RAMP SPACE.
PROBABILITY OF EXTENSION: LOW
REMARKS: THIS A US AIRWAYS GROUND STOP ONLY AS PER THEIR REQUEST.
RAMP SPACE IS BECOMING AN ISSUE AT CONCOURSE A/B/C.
180022-180300
05/07/18 00:21
An hour later things are getting better on our ramps - most of the big evening push is over:
ATCSCC ADVZY 011 DCC 07/18/05 US AIRWAYS GROUND STOP CANCELLATION
DESTINATION AIRPORT: PHL
RELEASED FACILITIES: ALL
REMARKS: US AIRWAYS OPERSTIONS BACK TO NORMAL.
180123-180300.
05/07/18 01:24
Finally, at 10:20PM, the ATC ground stop program is cancelled:
AIRPORT: PHL
ADL TIME: 0219Z
GDP CNX PERIOD: 18/0219Z - 18/0803Z
REASON: WEATHER
REMARKS: PLEASE ABIDE BY MIT RESTRICTIONS
[MIT - Miles In Trail or increased in trail spacing for arriving aircraft]
So there it is - a day in the life of PHL in the summer....
Jim
So here is a look at the day from ATC's viewpoint, with only those bits that affect PHL....
The day starts normally enough for a summer day. This is the ATC command center advisory from 6:00 AM (1000Z) with the operations plan:
ATCSCC ADVZY 012 DCC 07/17/05 OPERATIONS PLAN
VALID FOR 171000 THRU 171600
TERMINAL CONSTRAINTS:
NY METROS/PHL/DC METROS/ATL/PIT/CLE/DTW-LOW CIGS/PM SCT TSTMS
ENROUTE CONSTRAINTS:
ZNY/ZDC/ZOB/ZID/ZME/ZMP-TSTMS
[NY, Washington, Cleveland, Indianapolis, Memphis, Minneapolis Centers can expect thunderstorms to affect operations]
1. ROUTES
UNTIL 1600Z -ZBW/ZNY TACTICAL REROUTES.
[Boston & NY centers can expect rerouting of aircraft until 1600Z]
2. ZNY
UNTIL 1500Z -NY METROS/PHL GROUND STOPS POSSIBLE.
The next operations plan update comes out about 7:30 AM (1130Z):
ATCSCC ADVZY 015 DCC 07/17/05 OPERATIONS PLAN
VALID FOR 171200 THRU 171800
TERMINAL CONSTRAINTS:
NY METROS/PHL/DC METROS/ATL/PIT/CLE/DTW-LOCIGS/TSTMS
[Low ceilings/thunderstorms could affect these airports]
ENROUTE CONSTRAINTS:
ZNY/ZDC/ZOB/ZID/ZME/ZMP-TSTMS
1. ROUTES
UNTIL 1600Z -ZBW/ZNY TACTICAL REROUTES
AFTER 1830Z -POSSIBLE CHOKE POINTS FOR EWR/JFK
2. ZNY
UNTIL 1500Z -PHL LIMITED AIRBORNE HOLDING, CDR'S, GROUND STOPS POSSIBLE
The 9:30 ops plan update is still only covering the possibilities:
ATCSCC ADVZY 022 DCC 07/17/05 OPERATIONS PLAN
VALID FOR 171400 THRU 172000
TERMINAL CONSTRAINTS:
NY METROS/PHL/DC METROS/ATL/PIT/CLE/DTW-TSTMS
ENROUTE CONSTRAINTS:
ZNY/ZDC/ZOB/ZID/ZME/ZMP-TSTMS
1. ROUTES
AFTER 1500Z -EXPECT CHOKE POINTS FOR EWR/JFK
3. ZNY
AFTER 1800Z -PHL LIMITED AIRBORNE HOLDING, CDR'S, SWAP, EXPECT
GROUND DELAY PROGRAMS IN SUPPORT OF SWAP
Finally, at 10:30 AM 91430Z)ATC starts assigning ground holds for flights estimated to arrive PHL between 1800Z & 0200Z (2:00PM to 10:00 PM):
AIRPORT: PHL
ARRIVALS ESTIMATED FOR: 17/1800Z - 18/0159Z
PROGRAM RATE: 38/38/38/38/38/38/48/48
[The arrival rate per hour for each hour of the period covered - 2:00 PM till 10:00 PM]
FLIGHTS INCLUDED: ALL CONTIGUOUS US DEPARTURES
SCOPE: (Manual) ZSE ZLC ZFW ZAU ZMP ZDV ZKC ZME ZID ZMA ZHU ZJX ZOB
ZBW ZTL ZNY ZDC ZOA
[This list covers about every ATC center in the lower 48 except Los Angeles & Albuquerque]
ADDITIONAL FACILITIES INCLUDED:
CANADIAN AIRPORTS INCLUDED: CYHZ CYOW CYUL CYYZ
DELAY ASSIGNMENT TABLE APPLIES TO: ZNY
MAXIMUM DELAY: 127
AVERAGE DELAY: 64.5
REASON: WEATHER, SWAP SUPPORT
[SWAP = Severe Weather Avoidance Plan]
At 3:11PM (1911Z), the ATC command center issues this ground stop:
AIRPORT: PHL
GROUND STOP PERIOD: 17/1909Z - 17/2000Z
SCOPE: (2ndTier+CZY_AP) ZAU ZMP ZID ZJX ZOB ZBW ZTL ZNY ZDC CYHZ
CYOW CYUL CYYZ
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 407/60/18.5
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 1090/87/49.5
REASON: WEATHER, TSTMS
PROBABILITY OF EXTENSION: MEDIUM
About 45 minutes later, this is issued cancelling the ground stop and returning to ground holds:
AIRPORT: PHL
ARRIVALS ESTIMATED FOR: 17/1949Z - 18/0359Z
PROGRAM RATE: 34
[Hourly arrival rate per hour for the period in the line above - notice it's lower than before]
FLIGHTS INCLUDED: ALL CONTIGUOUS US DEPARTURES
SCOPE: (Manual) ZSE ZLC ZFW ZAU ZMP ZDV ZKC ZME ZID ZMA ZHU ZJX ZOB
ZBW ZTL ZNY ZDC ZOA
ADDITIONAL FACILITIES INCLUDED:
CANADIAN AIRPORTS INCLUDED: CYHZ CYOW CYUL CYYZ
DELAY ASSIGNMENT TABLE APPLIES TO: ZNY
MAXIMUM DELAY: 384
AVERAGE DELAY: 181.5
REASON: WEATHER, TSTMS
REMARKS: GROUND STOP CANCELLED, FLTS RLS ON NEW EDCTS. GDP WILL BE
REVISED AS CONDITIONS WARRNAT. THE FOLLOWING FACILITES ARE GROUND
STOPPED UNTIL 2100Z: ZOB/ZAU/ZMP.
[Flights released on new Estimated Departure Clearance TimeS (Takeoff, not taxi). Aircraft departing airports within Cleveland, Chicago, & Minneapolis Centers still stopped]
At 4:14PM (2014Z) the ground stops go back in effect:
AIRPORT: PHL
ADL TIME: 2014Z
GROUND STOP PERIOD: 17/2014Z - 17/2130Z
SCOPE: (2ndTier+CZY_AP) ZAU ZMP ZID ZJX ZOB ZBW ZTL ZNY ZDC CYHZ
CYOW CYUL CYYZ
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 3538/175/117.9
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 4055/224/135.2
REASON: WEATHER, TSTMS
PROBABILITY OF EXTENSION: MEDIUM
REMARKS: NO RTES AVAILABLE.
An hour later, things are getting worse again:
AIRPORT: PHL
ADL TIME: 2114Z
GROUND STOP PERIOD: 17/2014Z - 17/2230Z
SCOPE: (ALL+CZY_AP) ZSE ZAB ZLC ZFW ZLA ZAU ZMP ZDV ZKC ZME ZID ZMA
ZHU ZJX ZOB ZBW ZTL ZNY ZDC ZOA CYHZ CYOW CYUL CYYZ
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 6349/281/127.0
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 8764/287/175.3
REASON: WEATHER, TSTMS
PROBABILITY OF EXTENSION: MEDIUM
REMARKS:
Another hour passes (it's 2214Z or 6:14 PM) and it gets even worse - look at the acceptance rate:
AIRPORT: PHL
ADL TIME: 2214Z
ARRIVALS ESTIMATED FOR: 17/2215Z - 18/0459Z
PROGRAM RATE: 28/28/34/34/34/34/34
FLIGHTS INCLUDED: ALL CONTIGUOUS US DEPARTURES
SCOPE: (Manual) ZSE ZLC ZFW ZAU ZMP ZDV ZKC ZME ZID ZMA ZHU ZJX ZOB
ZBW ZTL ZNY ZDC ZOA
ADDITIONAL FACILITIES INCLUDED:
CANADIAN AIRPORTS INCLUDED: CYHZ CYOW CYUL CYYZ
DELAY ASSIGNMENT TABLE APPLIES TO: ZNY
MAXIMUM DELAY: 403
AVERAGE DELAY: 221.9
REASON: WEATHER, TSTMS
REMARKS: GROUND STOP CANCELED, ACFT RLSD ON NEW EDCT'S.
Just before 8:00PM things are getting better - the delays are coming down:
AIRPORT: PHL
ADL TIME: 2354Z
COMPRESSION PERIOD: 17/2354Z - 18/0745Z
[ATC has been "compressing" the departure times - EDCTS, i.e. reducing the length of the delays]
PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 22689/367/189.1
NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 19824/397/165.2
REASON: WEATHER, TSTMS
Then at 8:20PM our ramps get so congested that we request a US only ground stop (gotta love that east operation at PHL):
ATCSCC ADVZY 003 DCC 07/18/05 "US AIRWAYS" GROUND STOP
DESTINATION AIRPORT: PHL
FACILITIES INCLUDED: ZNY2+CZY
EXPECT UPDATE: 0130Z
REASON: RAMP SPACE.
PROBABILITY OF EXTENSION: LOW
REMARKS: THIS A US AIRWAYS GROUND STOP ONLY AS PER THEIR REQUEST.
RAMP SPACE IS BECOMING AN ISSUE AT CONCOURSE A/B/C.
180022-180300
05/07/18 00:21
An hour later things are getting better on our ramps - most of the big evening push is over:
ATCSCC ADVZY 011 DCC 07/18/05 US AIRWAYS GROUND STOP CANCELLATION
DESTINATION AIRPORT: PHL
RELEASED FACILITIES: ALL
REMARKS: US AIRWAYS OPERSTIONS BACK TO NORMAL.
180123-180300.
05/07/18 01:24
Finally, at 10:20PM, the ATC ground stop program is cancelled:
AIRPORT: PHL
ADL TIME: 0219Z
GDP CNX PERIOD: 18/0219Z - 18/0803Z
REASON: WEATHER
REMARKS: PLEASE ABIDE BY MIT RESTRICTIONS
[MIT - Miles In Trail or increased in trail spacing for arriving aircraft]
So there it is - a day in the life of PHL in the summer....
Jim