An A319 captain describes pervasive fatigue due to his air carrier work rules.

Attributes
ACN	713420
Time
Date	200610
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : mmmx.airport
State Reference	FO
Environment
Flight Conditions	IMC
Aircraft 1
Controlling Facilities	tracon : mmex.tracon
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : instrument non precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 210 flight time total : 8000 flight time type : 1952
ASRS Report	713420
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Company
Primary Problem	Company

Narrative:

We flew to mexico city. I was very tired. We flew an approach navigation approach. I was the PNF. I had gotten the ATIS on communication #2 and never switched my transmit selector back to communication #1. Approach told us to contact tower; we were very busy with cdap to 200 ft above minimums on the VOR-DME 2 runway 5L. I got clearance to land at 800 ft. I was so tired that I am not even sure if I would have realized that we were almost at decision altitude for the approach. The trips that we are now flying have my body sleep cycle so screwed up at home; I almost feel like I am in a fog at home for the first days after a trip. I don't feel that there is sufficient time to get rest. We landed safely but I am noticing mistakes that I am making now that I have never made in all my previous flying here at air carrier or before. My first officer's are also making very simple small mistakes; luckily we are not making the mistakes at the same time. Fatigue! As my father has told me since I started flying and still does today as a retiree; nothing happens until the body count goes up. We cannot let fatigued pilots let simple mistakes snowball into a crash! I have never been so tired even on my days off; we have got to think of safety here.

Original NASA ASRS Text

Title: AN A319 CAPT DESCRIBES PERVASIVE FATIGUE DUE TO HIS ACR WORK RULES.

Narrative: WE FLEW TO MEXICO CITY. I WAS VERY TIRED. WE FLEW AN APCH NAV APCH. I WAS THE PNF. I HAD GOTTEN THE ATIS ON COM #2 AND NEVER SWITCHED MY XMIT SELECTOR BACK TO COM #1. APCH TOLD US TO CONTACT TWR; WE WERE VERY BUSY WITH CDAP TO 200 FT ABOVE MINIMUMS ON THE VOR-DME 2 RWY 5L. I GOT CLRNC TO LAND AT 800 FT. I WAS SO TIRED THAT I AM NOT EVEN SURE IF I WOULD HAVE REALIZED THAT WE WERE ALMOST AT DECISION ALT FOR THE APCH. THE TRIPS THAT WE ARE NOW FLYING HAVE MY BODY SLEEP CYCLE SO SCREWED UP AT HOME; I ALMOST FEEL LIKE I AM IN A FOG AT HOME FOR THE FIRST DAYS AFTER A TRIP. I DON'T FEEL THAT THERE IS SUFFICIENT TIME TO GET REST. WE LANDED SAFELY BUT I AM NOTICING MISTAKES THAT I AM MAKING NOW THAT I HAVE NEVER MADE IN ALL MY PREVIOUS FLYING HERE AT ACR OR BEFORE. MY FO'S ARE ALSO MAKING VERY SIMPLE SMALL MISTAKES; LUCKILY WE ARE NOT MAKING THE MISTAKES AT THE SAME TIME. FATIGUE! AS MY FATHER HAS TOLD ME SINCE I STARTED FLYING AND STILL DOES TODAY AS A RETIREE; NOTHING HAPPENS UNTIL THE BODY COUNT GOES UP. WE CANNOT LET FATIGUED PLTS LET SIMPLE MISTAKES SNOWBALL INTO A CRASH! I HAVE NEVER BEEN SO TIRED EVEN ON MY DAYS OFF; WE HAVE GOT TO THINK OF SAFETY HERE.

Data retrieved from NASA's ASRS site as of January 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.