MD80 captain reports that runway 5L at MMMX is useable for takeoff from the a taxiway according to M...

Attributes
ACN	776107
Time
Date	200802
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mmmx.airport
State Reference	FO
Altitude	agl single value : 0
Environment
Light	Dawn
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Function	flight crew : captain oversight : pic
ASRS Report	776107
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Chart Or Publication Airport
Primary Problem	Ambiguous

Narrative:

Weight and temperature allowed for a takeoff from runway 5L at MMMX; so this runway was accepted when assigned. From a cursory study of airport diagram; it appeared that a takeoff from runway 5L should be commenced from intersection B2; airport diagram designates the portion of runway 5L prior to this intersection as stopway. Mexico city tower told us to taxi all the way to the end of the stopway and plan takeoff from taxiway a intersection. A much closer inspection of the tps revealed the stopway could and should be used for the takeoff. To prevent an inappropriate takeoff from taxiway B2 in the future; I make two suggestions. First and foremost; the approach end of runway 5L on the airport diagram should not be shown as a stopway but rather as a runway with displaced threshold all the way back to taxiway a. Second; the highlighted box on the takeoff performance page begins: 'twy 5L/23R takeoff lengths are shorter than pavement length shown on airport diagram. Full length is available for accel-stop purposes.' because stopways normally refer to the portion of the runway at the departure end of the runway and not the approach end; I suggest this last sentence read: 'takeoff from taxiway a is available for accel-stop purposes when taking off on runway 5L.'

Original NASA ASRS Text

Title: MD80 CAPT REPORTS THAT RWY 5L AT MMMX IS USEABLE FOR TKOF FROM THE A TXWY ACCORDING TO MMMX TOWER; BUT IS DEPICTED AS STOPWAY ON THE ARPT DIAGRAM.

Narrative: WT AND TEMP ALLOWED FOR A TKOF FROM RWY 5L AT MMMX; SO THIS RWY WAS ACCEPTED WHEN ASSIGNED. FROM A CURSORY STUDY OF ARPT DIAGRAM; IT APPEARED THAT A TKOF FROM RWY 5L SHOULD BE COMMENCED FROM INTXN B2; ARPT DIAGRAM DESIGNATES THE PORTION OF RWY 5L PRIOR TO THIS INTXN AS STOPWAY. MEXICO CITY TWR TOLD US TO TAXI ALL THE WAY TO THE END OF THE STOPWAY AND PLAN TKOF FROM TXWY A INTXN. A MUCH CLOSER INSPECTION OF THE TPS REVEALED THE STOPWAY COULD AND SHOULD BE USED FOR THE TKOF. TO PREVENT AN INAPPROPRIATE TKOF FROM TXWY B2 IN THE FUTURE; I MAKE TWO SUGGESTIONS. FIRST AND FOREMOST; THE APCH END OF RWY 5L ON THE ARPT DIAGRAM SHOULD NOT BE SHOWN AS A STOPWAY BUT RATHER AS A RWY WITH DISPLACED THRESHOLD ALL THE WAY BACK TO TXWY A. SECOND; THE HIGHLIGHTED BOX ON THE TKOF PERFORMANCE PAGE BEGINS: 'TWY 5L/23R TKOF LENGTHS ARE SHORTER THAN PAVEMENT LENGTH SHOWN ON ARPT DIAGRAM. FULL LENGTH IS AVAILABLE FOR ACCEL-STOP PURPOSES.' BECAUSE STOPWAYS NORMALLY REFER TO THE PORTION OF THE RWY AT THE DEP END OF THE RWY AND NOT THE APCH END; I SUGGEST THIS LAST SENTENCE READ: 'TKOF FROM TXWY A IS AVAILABLE FOR ACCEL-STOP PURPOSES WHEN TAKING OFF ON RWY 5L.'

Data retrieved from NASA's ASRS site as of May 2009 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.

MD80 captain reports that runway 5L at MMMX is useable for takeoff from the a taxiway according to MMMX tower; but is depicted as stopway on the airport diagram.